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ABELIA GRANDIFLORA 'CONFETTI'

£5.50

Pink flowers from persistent beige calyces Aug-Dec, cream variegated glossy foliage, 1-2m. Easy. PVR - propagation for resale prohibited. Pretty in a big pot.

ABROMEITIELLA BREVIFOLIA RCB RA-P-27

£4.50

Spreads to make large patches of small slightly spiny grey-green rosettes 10cm diameter, short heads of very boring three petalled green flowers Apr-Jun. Dry cliffs in Rio Toro Valley, Salta province, Argentina, 2300m asl. AGM. Photo.

ACACIA BAILEYANA 'PURPUREA'

£6.50

Purple-flushed blue-leaved shrub for conservatories or sheltered sites outside. Cream flowers in clusters Mar-Apr. AGM. Bobs Score=6.0.

ACANTHUS 'RUE LEDAN'

£4.50

Green hooded white flowers Jun-Sep, broad glossy green foliage, compact 60cm. Sterile - no unwanted seedlings. Bobs Score=7.5. Photo.

ACANTHUS 'SUMMER BEAUTY'

£4.50

Broad glossy wonderfully figured foliage, white flowers from purple calyces, Jun-Aug, 70cm. Easy. Probably A.spinosus x A.mollis and set to become the norm. Bobs Score=8.0. Photo.

ACANTHUS DIOSCORIDIS var.PERRINGII clone 2

£4.50

Dumpy spikes of huge intricate pink, white and grey-green flowers Jun-Aug, deeply toothed greyish leaves, 30cm. Sun and well-drained. More vigorous than clone 1. Bobs Score=7.0. Photo.

ACANTHUS HIRSUTUS

£4.50

Nice imbricated hairy leaves lie flat on ground, spikes of scented pale creamy-yellow flowers, Jun-Aug, 40cm. Easy. Syria. Spreader. Bobs Score=4.0. Photo.

ACANTHUS MOLLIS 'HOLLARD'S GOLD'

£5.50

Beautiful broad shining golden yellow-green leaves, particularly between autumn and spring (and in summer in shady places). Mauve and white flower spikes Jun-Sep, 90cm. shade or half shade. Bobs Score=8.5. Photo.

ACANTHUS SPINOSISSIMUS

£5.50

Spiny white variegated leaves, smart spikes of large purple, white and green hooded flowers Jun-Sep, 60cm. Completely herbaceous. Bobs Score=6.0. Photo.

ACANTHUS SPINOSISSIMUS

£5.50

Spiny white variegated leaves, smart spikes of large purple, white and green hooded flowers Jun-Sep, 60cm. Completely herbaceous. Bobs Score=6.0. Photo.

ACANTHUS SPINOSUS FERGUSONS' FORM

£4.50

Good, neat, floriferous and mildew-free. As the Fergusons said (somewhat enigmatically), "First find your clone". White flowers with purple bracts Jul-Oct, dark figured leaves more divided than normal, compact 65cm. Bobs Score=8.0. Photo.

ACANTHUS SYRIACUS

£4.50

Short spikes of dark maroon-purple flowers Jul-Sep, 45cm. Photo.

ACHILLEA 'FANAL'

£4.50

Bright red flowers Jun-Aug and later, 60cm. Best in open well-drained soil. Syn.'The Beacon'. Bobs Score=6.0.

ACHILLEA 'MOONSHINE'

£4.50

Clear lemon yellow flowers May-Jul(Oct), good grey evergreen foliage, 60cm. Open sunny sites. AGM. Bobs Score=8.0. Photo.

ACHILLEA 'MOONWALKER'

£4.50

Dull yellow flowers over unusually bright green foliage May-Aug, 80cm. Photo.

ACHILLEA 'PROSPERO'

£4.50

Like a cream flowered Achillea 'Moonshine'. Evergreen grey foliage and creamy yellow flowers May-Aug, 60cm. Sun. Bobs Score=7.0.

ACHILLEA 'RED VELVET'

£4.50

Broad heads of strong pure red flowers Jun-Sep that keep their colour (maybe darken to crimson) as they age, 60cm. Bobs Score=9.0. Photo.

ACHILLEA 'ROSE MADDER'

£4.50

Lovely soft red flowers Jun-Jul keep their colour as they die and then (unusually) repeat flowers till Nov, short 55cm. Survives winter wet on clay soil better than most. No vices. Bobs Score=8.0. Photo.

ACHILLEA 'WALTHER FUNCKE'

£4.50

Short fiery orange-red flowers over grey foliage Jun-Aug, 40cm. Easy even in dry shade when established. Hardier than A.Feuerland in wet winters and shorter. Bobs Score=8.0. Photo.

ACHILLEA FILIPENDULINA 'GOLD PLATE'

£4.50

Flat gold flower heads Jun-Aug, 1.2m, feathery leaves. Sun, easy and very long-lived. Good for drying. AGM. Bobs Score=7.0.

ACIS AUTUMNALE 'COBB'S VARIETY'

£4.50

Seems very similar to the ordinary one but the flowers are bigger (maybe twice as big) -which isn't saying a lot. Pretty little beige-flushed white bell flowers Aug-Oct, 15cm. Well drained soil. Synonym Leucojum autumnale 'Cobb's Variety'. Bobs Score=7.0. Photo.

ACIS NICAEENSIS

£4.50

Thought to be extinct in the wild. Pendent waxy white flowers from creamy yellow buds Apr-May, dark narrow foliage 15cm. AGM. Easy. Synonym Leucojum nicaeense. Bobs Score=7.0. Photo.

ACIS TINGITANA

£4.50

Pretty heads of hanging starry white flowers Jan-Apr, 30cm. Best in dry shade under deciduous trees where it will get winter moisture and summer baking. Don't judge it for several years - finally it's magnificent. Synonym Leucojum tingitanum. Photo.

ACIS TRICHOPHYLLA

£4.50

Lovely slender clusters of small pink-flushed flowers Feb-May, 25cm. Easy, different and fairly rare. Synonym Leucojum trichophyllum. Photo.

ACIS TRICHOPHYLLA f.PURPURASCENS

£5.50

Delightful slender clusters of pink flushed flowers Feb-May, 25cm. Easy, different and fairly rare. See AGS Bulletin Mar03. Synonym Leucojum trichophyllum f.purpurascens.

ACIS VALENTINA

£4.00

Pretty hanging dish-shaped white flowers 2-3 to a stem Feb-May (for St.Valentine's day), 25cm. Easy but uncommon. Synonym Leucojum valentinum.

ACONITUM 'RED WINE'

£5.50

Large glossy wine-red flowers Jul-Sep, climber, 2-3m. A hybrid from Shanghai BG. via Sweden. Photo.

ACONITUM ALBOVIOLACEUM

£5.50

A climbing Aconitum. Large basal rosettes eventually send up twining stems with white hooded flowers kissed with violet Jul-Sep, 2m. Z5-9

ACONITUM ANGLICUM

£4.50

Blue flowers May-Jul, lovely soft winter foliage,60cm. Easy, tolerant of dry shade under trees. British native - monkshood. Bobs Score=7.0. Photo.

ACONITUM CARMICHAELII

£4.50

A healthy stocky plant of great value. Deep blue flowers Aug-Oct, dark green foliage, 60cm. Bobs Score=7.5.

ACONITUM CARMICHAELII 'RIVER ARROW'

£5.50

Young foliage yellow maturing to an attractive yellowish-green with greener edges, flowers deep blue Sep-Nov, short 40cm.

ACONITUM CARMICHAELII 'RIVER LUGG'

£5.50

The foliage is thick and when young golden yellow greening-up later, flowers deep blue Sep-Oct, short 55cm.

ACONITUM CARMICHAELII 'RIVER LUNE'

£5.50

Pure blue flowers with paler throats Sep-Nov, good green foliage,1.3m.

ACONITUM CARMICHAELII 'RIVER NENE'

£5.50

Deep blue flowers Sep-Nov, mid height 70cm, foliage burnished green with darker green tips.

ACONITUM CARMICHAELII 'RIVER OUSE'

£5.50

The young foliage is yellowish with leaves divided into 3. This greens-up later, deep blue flowers Sep-Nov, 1.3m.

ACONITUM CARMICHAELII 'RIVER TEES'

£5.50

Deep purple flowers in neat heads Sep-Nov. Young foliage cut and purple-green, 1m.

ACONITUM CARMICHAELII 'RIVER TRENT'

£5.50

The young foliage is creamy with a pink flush. Spikes of dusky blue flowers Aug-Oct, 55cm.

ACONITUM CARMICHAELII 'ROYAL FLUSH'

£5.50

The leaves are deep red in spring but become green later, substantial deep blue flowers - a much darker and clearer blue than normal Sep-Oct, shorter than normal at 60cm. Good cut flower. Plant Variety Rights Europe - propagation for resale prohibited. Bobs Score=8.5. Photo.

ACONITUM CARMICHAELII ex Nepal ex Kath Dryden

£4.50

Pale to mid-blue flowers Aug-Nov, dark green leaves, short 65cm. Bobs Score=7.5. Photo.

ACONITUM CARMICHAELII WILSONII GROUP 'BARKER'S VARIETY'

£4.50

Soft blue flowers Aug-Sep, 1.3m. Similar to and earlier than A.carmichaelii ssp.arendsii and a softer colour. Bobs Score=8.0.

ACONITUM CARMICHAELII WILSONII GROUP 'SPATLESE'

£4.50

Dreamy clear pale blue flowers shade darker at edges Jul-Oct, good foliage, 1.2m. Bobs Score=8.0.

ACONITUM LYCOCTONUM 'DARKEYES'

£4.50

Primrose-yellow flowers with black stamens from dark stems (and darker leaves than normal) Jun-Aug, 75cm. Easy. Developed from a mutant shoot here. Bobs Score=7.5. Photo.

ACONITUM LYCOCTONUM subsp.MOLDAVICUM

£5.50

Dark scapes with lovely and most unusual dusky purple flowers shaded with cream at the mouth and dusky violet on the spur May-Jul, 55cm. Photo.

ACONITUM x CAMMARUM 'BICOLOR'

£5.50

White flowers and violet-blue flowers in elegant sprays, glossy divided foliage, 55cm. AGM. Bobs Score=9.0.

ACONITUM x CAMMARUM 'ELEANORA'

£5.50

Delightful in leaf, bud, flower and seed! Pure white flowers with violet tips from greenish-white buds in elegant sprays, glossy divided foliage, 55cm. Bobs Score=9.5.

ACTAEA SIMPLEX 'BLACK NÉGLIGÉE'

£6.50

Decorative black foliage, spikes of white scented flowers Jul-Sep, 90cm. Bobs Score=8.0.

ACTAEA SIMPLEX 'BRUNETTE'

£6.50

Very dark black-purple leaves and spikes of scented white flowers Jul-Sep, 120cm. Bobs Score=8.0. Photo.

ACTAEA SIMPLEX 'JAMES COMPTON'

£6.50

Decorative black foliage, spikes of white scented flowers Jul-Sep, 90cm. The foliage is greener when young - don't worry. Bobs Score=8.0.

ACTAEA SIMPLEX 'PINK SPIKE'

£6.50

Black foliage, pink flowers Jul-Sep, 75cm. Avoid very limy soils. Photo.

ACTAEA SPICATA

£4.50

Sprays of shining black berries Aug-Nov, 30cm. Dry shade. Bobs Score=4.0. Photo.

ADENOPHORA AURITA

£4.50

(A Roy Lancaster introduction). Nodding pearly blue-mauve bells Jun-Sep, matching foliage, lovely, 50cm. Easy. Syn. A.stricta subsp.sessilifolia. Bobs Score=8.5. Photo.

ADENOPHORA BULLEYANA

£4.50

Tall stately spikes of blue bell flowers Jun-Aug(Sep), 1.6m. Easy even dry shade. Bobs Score=7.0. Photo.

ADENOPHORA PERESKIIFOLIA

£4.50

Spires of blue flowers from a mound of foliage Jun-Oct, 80cm. Easy and persistent in bad conditions. Bobs Score=8.0. Photo.

ADIANTUM PEDATUM 'IMBRICATUM'

£5.50

Hardy stalked maidenhair fern with black rhachis and imbricated fronds (each part overlapped like the tiles on a roof), compact 25cm. Good soil, shade. Bobs Score=8.0. Photo.

ADIANTUM VENUSTUM

£5.50

Open airy fronds 20cm, hardy. Shaded site not too damp. Maidenhair fern. AGM. The foliage is more or less evergreen. Bobs Score=6.5. Photo.

ADONIS AMURENSIS

£5.50

Pretty very early large yellow flowers nestling in soft ferny leaves Feb-Apr, 20cm. Good soil (not highly alkaline). Bobs Score=7.5. Photo.

AEONIUM 'CRISTATA SUNBURST'

£5.50

From Japan. Congested heads of half-hardy evergreen pink and cream rosettes, 15cm. Bobs Score=8.0. Photo.

AEONIUM ARBOREUM 'ZWARTKOP'

£5.50

Vowel-rich large flat rosettes of near black succulent leaves - very good architectural plant for standing out in summer, heads of yellow flowers late summer, 40cm. Tender perennial, sun. AGM. Take out the eye with a sharp knife to keep it bushy. Bobs Score=9.0. Photo.

AEONIUM DECORUM 'VARIEGATUM'

£5.50

Striking coral-edged succulent cream rosettes, nice cream flowers at some time Jun-Nov, 20cm. Tender but mine sits outside from Mar-Nov then goes into minimum protection. Bobs Score=8.0. Photo.

AGAPANTHUS 'BLACK PANTHA'

£6.50

Black-purple flowers from dark stems Jul-Sep, evergreen foliage 60cm. PVR in Europe - unlicensed propagation for resale prohibited. Bobs Score=9.5.

AGAPANTHUS 'BLUE HEAVEN'

£6.50

Selected and patented for its long season of flowering. Large heads of blue flowers Jun-Sep, 75cm. PVR - propagation for resale prohibited.

AGAPANTHUS 'BLUE MOON'

£6.50

Dense round heads of large pale grey-blue flowers on stocky upright stems Jul-Aug, 85cm. Hardy. Lovely. An Eric Smith hybrid. Guaranteed to turn me to song. Bobs Score=8.5.

AGAPANTHUS 'BLUE MOON' seedlings

£5.50

The seed parent has dense round heads of large pale grey-blue flowers on stocky upright stems Jul-Aug, 85cm. Hardy. With such a good mother who knows what the progeny will be like?

AGAPANTHUS 'ED CARMAN'

£12.50

Broad bright variegated foliage in golden-yellow and chartreuse, large full heads of white flowers Aug-Oct, relatively short 55cm. Bobs Score=9.5. Photo.

AGAPANTHUS 'ESSENCE OF SUMMER'

£5.50

Large heads of blue flowers with darker midstripes on relatively short stems, relatively early Jun-Aug, 60cm. Very very hardy. Seed from Kirstenbosch BG as A.inapertus subsp.intermedius via Witton Lane Seed, Somewhere along the line it hybridized.. Bobs Score=8.0.

AGAPANTHUS 'FAST TRACK'

£6.50

The leaves have colourful yellow-cream edges and creamy-green middles. Lilac-blue flowers Jul-Oct, 45cm. Hardy. Bobs Score=8.5. Photo.

AGAPANTHUS 'GAYLES LILAC'

£6.50

Lilac flowers later than other kinds Aug-Oct, 40cm, narrow foliage 25cm. Hardy. Bobs Score=7.5. Photo.

AGAPANTHUS 'GAYLES LILAC'

£6.50

Lilac flowers later than other kinds Aug-Oct, 40cm, narrow foliage 25cm. Hardy. Bobs Score=7.5. Photo.

AGAPANTHUS 'GREY RULER'

£6.50

large heads of blue-grey flowers over cream-edged foliage Jul-Sep, leaves 25cm, flowers 55cm. Easy, tough. Photo.

AGAPANTHUS 'JACK'S BLUE'

£6.50

Vigorous long-blooming hybrid from NZ. Prolific deep purple-blue flowers Jul-Oct, tall - 1.5m. A beauty. Hardy. Bobs Score=9.5. Photo.

AGAPANTHUS 'LOCH HOPE'

£6.50

Very large heads of good blue flowers with bluer midstripes Jul-Sep, tall 2m. Sun, good soil. Hardy. Easy. Big. Wonderful. Probably available from Jun onwards. No flower till 2009 onwards. Bobs Score=9.5.

AGAPANTHUS 'MAY SNOW'

£6.50

The spring foliage is almost white - darkening later. Tall heads of pure blue flowers Jul-Sep, 1m. Hybrid seedling from A.caulescens subsp.angustifolia. Photo.

AGAPANTHUS 'NAVY BLUE'

£6.50

In season, the most asked for agapanthus. Dark blue bells in clusters break from a black spathe Jul-Sep, leaves 25cm, flowers 60cm. Easy in sunny sites. Deciduous. Hardy. Bobs Score=10.0. Photo.

AGAPANTHUS 'PETER PAN'

£6.50

Vigorous dwarf variety, mid-blue flowers with a nice central darker blue stripe to each petal, Jul-Sep, 40cm. Bobs Score=6.5.

AGAPANTHUS 'PURPLE CLOUD'

£6.50

Superb deep purple flower heads Aug-Sep, 80cm. An inapertus hybrid from NZ. Bobs Score=8.5.

AGAPANTHUS 'TIMARU'

£6.50

Dense floriferous heads of vivid blue are produced in succession on many stems Jul-Oct, 75cm. A new NZ hybrid and very cold hardy. Bobs Score=9.0. Photo.

AGAPANTHUS 'WHITE HEAVEN'

£15.50

Large heads of exquisite pure white many petalled flowers - up to 80 per head Aug-Sep, 1m. Spotted by Kees de Jong of Holland. PVR - propagation for resale prohibited. Hardy. Bobs Score=10.0.

AGAPANTHUS 'WINDSOR GREY'

£6.50

Large heads of grey flowers with grey anthers and green pollen, fade slightly pink Jul-Sep, 85cm. The pedicels are dusky green. Easy. Deciduous and very tough. Bobs Score=9.0.

AGAPANTHUS ARDERNEI HYBRID

£6.50

Prolific heads of lovely white trumpets with brownish pedicels Jul-Oct, 60cm. Deciduous. Bobs Score=8.0. Photo.

AGAPANTHUS BIRR

£5.50

Seedlings from deciduous forms at Birr Castle, Co.Offally. Blue and purple flowers Jul-Sep, 1m. Hardy.

AGAPANTHUS HEADBOURNE HYBRIDS

£5.50

Exotic clusters of bells in shades of blue, 60-90cm. Sunny site. Easy. Bobs Score=7.0.

AGAPANTHUS CAMPANULATUS 'WHITE TRIUMPHATOR'

£5.50

Large tall heads of white flowers Jul-Sep, 1.3m. Hardy, sun, deciduous. Bobs Score=7.5.

AGAPANTHUS CAULESCENS subsp.ANGUSTIFOLIA seedlings

£5.50

Very large heads of deep dark blue flowers on very tall straight stems Jul-Sep, leek-like leaves forming pseudo-stems, 2.3m. Hardy, deciduous. AGM. Bobs Score=8.5. Photo.

AGAPANTHUS COMPTONII subsp.COMPTONII

£6.50

Blue flowers with bluer stripes in large heads Jul-Sep, 1m. Floriferous and evergreen. Hardy to -10C. Easy in sunny sites.

AGAPANTHUS COMPTONII subsp.LONGITUBUS

£6.50

Pale blue flowers in a loose many-flowered head each flower 6.5cm long with the tube making up nearly half the flower Jun-Aug, 1.2m. Floriferous and evergreen. Hardy to -10C.

AGAPANTHUS INAPERTUS

£8.50

Heads of pendant deep blue tubular flowers Jul-Sep, 1.5m. Always upright even in shade. Very hardy, deciduous. Bobs Score=8.0. Photo.

AGAPANTHUS NUTANS

£8.50

Deep navy blue nodding almost fleshy flowers in tight clusters Jul-Aug, 75cm. Very hardy, very deciduous. Photo.

AGAPANTHUS PRAECOX 'FLORE PLENO'

£6.50

Chunky double powder-blue flowers Jul-Sep, good foliage, 50cm. Very nice. Bobs Score=8.0.

AGAPANTHUS PRAECOX 'VITTATUS'

£12.50

Effective creamy variegated leaves and heads of clear blue flowers on short stems Jul-Sep, 35cm. Hardy and lovely in pots. Bobs Score=8.0.

AGASTACHE 'BLACK ADDER'

£4.50

Spikes of violet-blue flowers from black-purple buds on dark stems Jun-Oct, scented foliage 60cm. Agastache rugosum x Agastache foeniculum.

AGAVE AMERICANA 'VARIEGATA'

£5.50

Spiny succulent rosettes of leaves with broad yellow edges, 75cm eventually. Will take frost to -4C or maybe lower if dry or very well-drained. AGM. Bobs Score=7.0. Photo.

AGAVE BOLDINGHIANA

£5.50

Hardy to at least -9C and probably lower. Medium-sized dark rosettes with brown teeth. The flower spikes come out of the leaf axils and later centrally giving flower for about 8 months. The rosettes are not apparently monocarpic. Mexico. Bobs Score=8.0. Photo.

AGAVE CHRYSANTHA 'BLACK CANYON'

£5.50

Usually grows as a single rosette - offsets are rare. Relatively narrow glaucous blue-grey leaves 60cm. Hardy to -14C. Arizona. Nice. Bobs Score=7.5.

AGAVE COLORATA

£7.50

Small (even at maturity) impressive rosettes of banded powdery grey succulent leaves tinged red, to 45cm. It has proved hardy to -8C but not yet tested below -8C. Rare. Seed collected San Carlos Bay.

AGAVE DESERTI NNS 03-7

£5.50

Neat 50cm high rounded spiny plants sometimes in clusters and 5m spires of yellow feathery flowers. Hardy strain from 1250m.high Riverside Co.CA. Hardy to -12C. Bobs Score=7.5.

AGAVE HAVARDIANA DJF 1326

£5.50

Wet and cold hardy to at least -18C. Single blue-green rosettes of broad leaves 50 x 50cm. This collection from 5000ft.altitude Davis Mountains, Texas. Photographed with hoar frost at -12C in the field at Badsey. Bobs Score=8.0.

AGAVE IMPRESSA

£5.50

Red-flushed, white-patterned leaves in a neat succulent rosette. The patterns are formed by waxy deposits left when juvenile leaves were in contact with each other, 50cm. Seed collected Escuinapa, Mexico.

AGAVE LOPHANTHA CLONE 1

£5.50

Ferocious-looking rosettes of dark green spiny leaves (not as brutal as it looks), the sharp orange teeth-like spines, small 55cm. Each caniculate leaf has a median pale green band. More or less hardy (damaged the brutal winter 2005-6 but not killed). Bobs Score=7.0.

AGAVE LOPHANTHA CLONE 2

£5.50

A spherical plant paler than other clones, 55cm. Spathulate flat foliage with short white marginal hooks. Each leaf usually has a median chartreuse-green band. Smart. Bobs Score=8.0. Photo.

AGAVE NEOMEXICANA SB 948

£5.50

Clusters of spiny rosettes, leaves relatively narrow and grey-green 30cm. Red and yellow flowers Jun-Jul, 3m. Texas and New Mexico. Very cold and damp tolerant to -30C. Seed collected W. of Artesia.

AGAVE PARRASANA

£5.50

Small tight rosettes of nearly round banded blue-grey succulent leaves, 55cm. Hardy to at least -10C. Seed collected from the Sierra Parras.

AGAVE STRIATA subsp.FALCATA

£5.50

Relatively narrow blue-green leaved upstanding evergreen rosettes, 65cm, NE Mexico. Probably cold and wet hardy, sun, well-drained. Drought resistant!

AGROSTIS STOLONIFERA 'JULIE ANN'

£4.50

A prettily white-variegated form of bent grass which will cascade out of a pot or hanging basket in a most attractive way, 25cm. Piebald effects when introduced to lawns. Bobs Score=8.0. Photo.

AKEBIA LONGERACEMOSA B&SWJ3606

£5.50

Vanilla-scented soft red flowers in dangling grape-like heads topped by larger red-black flowers, later than A.quinata - May-Jul, long sausage-shaped purplish fruits. Climber 3-5m, sun, well-drained soil. Collected N.Taiwan. Evergreen 5 lobed foliage. Bobs Score=9.5. Photo.

AKEBIA QUINATA

£5.50

Semi-evergreen twining climber, vanilla scented deep puce flowers Mar-May and sometimes purplish fruits, 3-5m. Bobs Score=6.5. Photo.

AKEBIA QUINATA variegated

£6.50

Each pretty palmately-held leaflet is covered with random cream variegation. Heavy clusters of plum-purple flowers Mar-May, climber, 2-5m. The variegation is less obvious on young growth.

ALBUCA MAXIMA

£4.50

Hardy and very very long flowering. Tall heads of white flowers with dramatic green central stripes May-Aug and again Aug-Dec, broad green foliage 1.5m. May be A.altissima. Bobs Score=8.5. Photo.

ALBUCA SHAWII

£4.50

Green-striped yellow flowers in open heads to 40cm Jul-Aug, hardy outside here since May 2003. Drakensberg Mountains. Photo.

ALCALTHAEA 'PARKALLEÉ'

£5.50

Hollyhocks without rust! Lovely satiny yellow-cream semi-double flowers (this varies within the season), dark maroon stamens, sterile and therefore over a long period Jun-Nov (and particularly good Oct-Nov), grey-green leaves, 1.2m. Bobs Score=9.5.

ALCALTHAEA 'PARKRONDELL'

£5.50

Deep pink flowers deepen in autumn, long period of flower Jun-Nov, 2m. No rust. Photo.

ALLIUM 'MERCURIUS'

£4.50

Large lilac-blue balls of flower at least 10cm.wide Apr-Jun, 65cm. PVR applied for - propagation for resale prohibited. Bobs Score=7.5. Photo.

ALLIUM AFLATUNENSE 'PURPLE SENSATION' special selection

£4.50

Selected for size and depth of colour. Large deep purple balls of flowers from deep violet stems, May-Jul, 1.3m. Easy. Ever wondered about the name? Dig, clean and eat one, wait an hour and you'll understand. AGM. Bobs Score=9.0. Photo.

ALLIUM ALTISSIMUM 'GOLIATH'

£4.50

Very large round lilac-purple flower heads 15cm wide on stems up to 1.75m.high May-Jun. Easy. Originally from Alma Ata BG in 1965.

ALLIUM ANGULOSUM

£4.50

Mauve-purple flowers in domed flattish heads 6cm wide Jul-Aug, neat compact plant 40cm. Any soil, sun or light shade. Very attractive to butterflies and bees. Bobs Score=6.5.

ALLIUM CAERULEUM

£4.50

Incredible sky-blue onion flowers May-Jul, 55cm. Easy. AGM. Bobs Score=8.0. Photo.

ALLIUM CRISTOPHII

£4.50

Large heads of metallic mauve flowers May-Jul 20cm wide or more, dries well, 40cm. high. Easy except in poor sandy soil. AGM. Bobs Score=8.5. Photo.

ALLIUM CYANEUM

£4.50

Tufts of cobalt-blue flowers Jul-Aug on a 12cm high plant. Easy but not dry shade. AGM. Bobs Score=6.0. Photo.

ALLIUM CYATHOPHORUM var.FARRERI

£4.50

Nodding deep violet flowers May-Jul, 15cm. Any soil, sun or light shade. Robust, non-seeding kind. Bobs Score=7.0. Photo.

ALLIUM GEYERI

£4.50

Pretty tussocks of pale pinky mauve flowers relatively late in the allium season Jun-Sep, 15cm. Easy. Bobs Score=7.0.

ALLIUM HOOKERI ACE 2430

£4.50

Creamy-yellow flowers Sep-Oct, 45cm. Seed collected Cangshan Mtns, banks and slopes, 3500-3650m. Bobs Score=7.5. Photo.

ALLIUM HYALINUM pink form

£4.50

Impressive heads of large pale pink starry flowers May-Jun, 50cm. Easy, special. Bobs Score=7.0. Photo.

ALLIUM MACRANTHUM

£4.50

Heads of relatively sparse white flowers with coral pedicels Jun-Aug, 25cm. From 3000m.altitude, China. Broad pleated foliage.

ALLIUM NIGRUM

£4.50

Large sturdy heads of white flowers with black middles Jun-Jul, 40cm. Easy, nice and persistent despite the poor treatment it gets from me. Bobs Score=7.0. Photo.

ALLIUM OREOPHILUM

£4.50

Loose heads of rich rosy red flowers May-Jul, 18cm. Easy, summer dormant. Synonym A.ostrowskianum. Bobs Score=7.5.

ALLIUM OREOPHILUM 'ZWANENBURG'

£4.50

Loose heads of pink flowers May-Jul, 18cm. Easy, summer dormant. Synonym A.ostrowskianum. AGM. Bobs Score=7.5.

ALLIUM PARADOXUM var.NORMALE

£4.50

Charming large white campanulate flowers for a long season and very early in the year Feb-May, 12cm. A lovely new addition to the late winter/spring garden. Hardy. Bobs Score=8.0. Photo.

ALLIUM SENESCENS var.GLAUCUM

£4.50

Lovely leaves in grey swirls still good at anthesis, mauve flowers Jul-Sep, 25cm. Easy, good for butterflies and bees. Bobs Score=8.0.

ALLIUM SERRA

£4.50

Dense pale greyed-maroon heads of flowers Jul-Aug, 25cm. Nice. Photo.

ALLIUM SIKKIMENSE SBQE B

£4.50

Soft blue flowers in rounded heads which look like a dichelostemma (if you know what that is!) Jun-Aug, 30cm. Easy. Bobs Score=8.0.

ALLIUM SPHAEROCEPHALON

£4.50

Burgundy and green flowers in an egg-shaped head Jul-Aug, 90cm. Any soil, sun or light shade. Loved by bees and butterflies, and me. Bobs Score=9.0. Photo.

ALLIUM STIPITATUM 'VIOLET BEAUTY'

£4.50

Large half round blue-violet heads May-Jun, 55cm. Easy. Bobs Score=7.5. Photo.

ALLIUM SUBVILLOSUM

£4.50

Full pots. Heads of very pure white flowers May-Jun, 40cm. Easy. Spain. Bobs Score=7.5. Photo.

ALLIUM THUNBERGII 'OZAWA'

£4.50

Neat bright purple flowers at a good time of the year Sep-Nov, 20cm. Easy. Synonym A.thunbergii 'Nanum'. Very special. Bobs Score=8.5. Photo.

ALLIUM TUBEROSUM

£4.50

Tidy white flower heads over a long season at a useful time Jul-Nov, scented, 55cm. Easy. Lovely, the leaves are edible and give salads a distinctive and good flavour. Bobs Score=8.0. Photo.

ALLIUM UNIFOLIUM

£4.50

Long-lasting good big pink flowers in clusters May-Jul, 25cm, nice. Any soil. Full sun or light shade. Oregon/N.California. (Synonyms A.murrayanum, A.acuminatum both misapplied.) Bobs Score=8.0. Photo.

ALLIUM VICTORIALIS var.PLATYPHYLLUM

£4.50

Broad green foliage, neat greyish-green-white flower heads May-Jun, 45cm. Europe and Asia. Collected from the wild in Japan.

ALLIUM ZAPRJAGAJEVII

£4.50

Purple spherical flowers in hard 4.5cm wide heads May-Jun, narrow leek-like foliage, 60cm. Tazakstan. Photo.

ALOE STRIATULA

£5.50

Hardy exotic-looking succulent. Candelabra-branched heads of dark green tipped golden-green flowers with exserted orange stamens May-Jul, 60cm-1.5m. Easy. (Was incorrectly called A.ciliaris here.) Bobs Score=7.0. Photo.

ALSTROEMERIA 'DANDY CANDY'

£6.50

Large vibrant red, deep rose and white picotee flowers Jun-Sep(Oct), compact 45cm. Good for picking. Bobs Score=8.5.

ALSTROEMERIA 'FREEDOM'

£6.50

Tall heads of soft rose-madder flowers with a touch of peach (RHS 53D) a bold white pattern and carmine speckles. Reblooms Jun-Oct, 60cm. From the breeding program of Mark Bridgen at the University of Connecticut. Hardy. Bobs Score=8.5. Photo.

ALSTROEMERIA 'RED BEAUTY'

£6.50

Leaves with a broad yellow-green margin, red flowers Jun-Oct, 60cm. Good soil. Bobs Score=8.0.

ALSTROEMERIA 'SHORT PURPLE'

£6.50

Purple-violet flowers May-Nov, not so short 60cm. Hardy. Lovely. Bobs Score=8.0. Photo.

ALSTROEMERIA 'SPRING DELIGHT'

£6.50

Prolific and long-lasting apricot-pink flowers Jun-Jul, delightful grey-green leaves edged greyed-cream from winter onwards 60cm. Easy in well-drained soil with a little shade. Bobs Score=8.5. Photo.

ALSTROEMERIA 'SWEET LAURA'

£6.50

Faintly scented narrow-petalled apricot flowers with maroon flushed backs, Jul-Oct, 50cm. Vigorous and very hardy. Patented in USA and Europe - propagation for resale prohibited. Bobs Score=7.0. Photo.

ALSTROEMERIA AUREA 'ORANGE KING'

£5.50

Large deep orange flowers Jul-Aug, 70cm. Easy. With luck it is invasive (cool, moist shady). Photo.

ALSTROEMERIA HOOKERI subsp.CUMMINGIANA F&W 9575

£6.50

Delicate dusky rose-pink flowers flushed green Feb-May and Sep-Oct, 25cm. 300-500m altitude, central Chile. Photo.

ALSTROEMERIA PALLIDA

£6.50

Large pale peachy-pink and cream flowers with slight markings of crimson and gold Jun-Jul, only 20cm high despite the flower size, lax. Happy in cold greenhouse or gritty raised bed. Seed collected Chile, Lagunillas, 2200m.altitude. (Seed JCA 2.028.500). Bobs Score=7.5. Photo.

ALSTROEMERIA PSITTACINA 'MONA LISA'

£5.50

Heads of delicately marked green and red flowers Jul-Sep, 55cm - half the height of variegated A.psittacina 'Royal Star'. Photo.

ALSTROEMERIA PSITTACINA 'ROYAL STAR'

£5.50

Formerly sold as Alstroemeria psittacina variegated. Sharp white-variegated dark green leaves, red and green flowers Aug-Nov(Dec), 1m (taller than the unvariegated kind normally available). Good moistish acid to only mildly alkaline soil in half shade. Bobs Score=7.5. Photo.

ALSTROEMERIA VERSICOLOR F&W 8721

£6.50

Slightly spidery greenish-white to dark orange flowers flecked with dark rufous maroon May-Aug, short feathery tufts of foliage, 5cm. 200m in acacia savanna N.central Chile. Cold greenhouse. Photo.

ALTHAEA ARMENIACA

£4.50

(Formerly sold as A.cannabina.) Tall airy see-through perennial with sprays of small rose pink dark-eyed mallow flowers Jul-Nov, 1-2m. Easy, no rust problems. Bobs Score=8.0. Photo.

AMARCRINUM 'DOROTHY HANIBAL'

£8.50

Amaryllis belladonna x Crinum moorei. Stout heads 5-7 creamy flushed deep pink scented flowers Aug-Nov, 85cm. Hardy. Bobs Score=9.0. Photo.

AMARCRINUM MEMORIA-CORSII 'HOWARDII'

£12.50

Umbels of up to 10 large trumpet-shaped white fragrant flowers with creamy-pink throats that change to deeper pink, Aug-Nov, 75cm. (Amaryllis belladonna x Crinum moorei.) Hardy but also makes an easy and very good pot specimen. Bobs Score=8.5. Photo.

AMARINE TUBERGENII 'ZWANENBURG'

£6.50

Nerine bowdenii x Amaryllis belladonna - both hardy and a good reliable autumn flower. Heads of elegant deep pink flowers Sep-Nov, 60cm. Bobs Score=9.0. Photo.

AMARYLLIS BELLADONNA

£6.50

Astonishing soft sugary pink trumpets Aug-Sep, 75cm. Plant against a SW wall (which should be warm and wet). Probably a named variety but name unknown. AGM. Bobs Score=7.0. Photo.

AMARYLLIS BELLADONNA 'JOHANNESBURG'

£8.50

A free-flowering form, rose-pink flowers with a white throat and a yellowish base Aug-Oct, 70cm. Bobs Score=8.5. Photo.

AMARYLLIS BELLADONNA 'PURPUREA'

£8.50

Hardy. Heads of trumpet-shaped deep purple-pink flowers from stout stems Aug-Sep, foliage overwinter 75cm. Sunny site with no other plants crowding in.

AMICIA ZYGOMERIS

£5.50

Behaves as a hardy herbaceous perennial in my field. Foliage plant with dramatic leaflets notched and enclosed by pairs of large purple-veined glaucous green stipules, clusters of relatively large pale golden-yellow pea flowers Aug-Nov, 1.5m. Bobs Score=8.0. Photo.

AMORPHOPHALLUS ALBUS

£6.50

Upstanding white spathe with a fat yellow spadix May-Jul, followed by pinnately divided green foliage, 75cm. Hardy Z7b-10 (but needs a hot summer). Easier in a pot.

AMORPHOPHALLUS KERRII A-103 (Chen Yi)

£10.50

Leopard palm. Impressive short chrome-yellow spathes with fat out-of-proportion spadices from slender stems Jun-Jul, large bipinnate/pedate foliage, 65cm. Needs as much summer warmth as possible, keep the tuber frost-free in winter.

AMORPHOPHALLUS KONJAC

£6.50

Vinyl-like reddish-purple spathes to 40cm long with a dark brown spadix on long 60cm stalks Jun-Aug, single very large decorative leaves 1m follow the flower. Hardy but likes a warm site to grow strongly in the summer (Z7-10). Photo.

AMORPHOPHALLUS SP. A-102 (Chen Yi)

£6.50

Dark red flowers Jun-Jul, superb tall branched foliage with spotted stems the base of which is turquoise, 1m or more. Photo.

AMPELODESMOS MAURITANICUS

£5.50

A very large graceful evergreen grass with persistent graceful tan flower heads which flower early Apr-Jun and persist for 11 months looking good, foliage 1m flowers 2.5m. Very effective at the end of a long hard winter. Bobs Score=9.0. Photo.

AMPELOPSIS GLANDULOSA var.BREVIPEDUNCULATA 'ELEGANS'

£5.50

Lovely pink and cream leaves and clusters of shiny turquoise berries turn purple, slowly climbs to 2m. Very hardy. Bobs Score=8.0. Photo.

AMSONIA TABERNAEMONTANA

£4.50

Slatey blue flowers May-Jul, narrow leaves - good yellow in autumn, 75cm. Easy, even in limy clay and a very long-lived trouble-free perennial. Bobs Score=6.0. Photo.

ANAPHALIS TRIPLINERVIS

£4.50

One of few shade-loving silver foliage plants. Silver leaves white everlasting flowers, Jun-Dec, 20cm. AGM. Bobs Score=7.0. Photo.

ANDROPOGON SCOPARIUS 'PRAIRIE BLUE'

£4.50

Tufted blue-green grass turns purple-red in autumn, 65cm. (Little bluestem.) Synonym Schizachyrium scoparium.

ANEMONE APENNINA 'PETROVAC' CE&H 538

£4.50

Bright blue flowers over dense cushions of foliage Apr-May,18cm. OK in dry shade under trees. AGM. Bobs Score=9.0. Photo.

ANEMONE HUPEHENSIS 'ROTKAPPCHEN'

£4.50

Short deep dusky red-pink many-petalled flowers Aug-Oct, 45cm. Easy. Bobs Score=8.0. Photo.

ANEMONE NEMOROSA 'BLUE EYES'

£4.50

A great beauty. Shaggy double white flowers develop an indigo blue eye just as you are about to e-mail us with a complaint, Apr-May, 20cm. Rediscovered in Ireland. Bobs Score=8.0. Photo.

ANEMONE NEMOROSA 'KNIGHTSHAYES VESTAL'

£4.50

Large pure white button-centred wood anemone with a ring of yellow stamens (Mar)Apr-May, 15cm. Easy, even dry shade when established and lovely in lawns or interplanted. Bobs Score=8.0. Photo.

ANEMONE NEMOROSA 'ROBINSONIANA'

£4.50

A wood anemone with large lilac flowers Apr-May, 20cm, AGM. Easy, even dry shade. This is a famously good and robust plant and very stable. AGM. Bobs Score=7.5. Photo.

ANEMONE NEMOROSA 'ROYAL BLUE'

£4.50

Deep blue flowers with purple backs Apr-May, 15cm. Easy. Bobs Score=8.0.

ANEMONE NEMOROSA 'WESTWELL PINK'

£4.50

I like this more than any other wood anemone. The flowers open white but soon turn the brightest pink Apr-May, 20cm. Found in Westwell Woods near Ashford Kent. Via Tim Ingram. Bobs Score=9.0. Photo.

ANEMONE RANUNCULOIDES 'LACINIATA'

£4.50

Yellow nodding flowers Mar-May, pretty cut foliage with red midribs,10cm. Easy. Photo.

ANEMONE SP. Chen Yi T49

£6.50

Like a very large Anemone sylvestris with flowers 8cm.wide Jun-Jul, 18cm.

ANEMONE x HYBRIDA 'ANDREA ATKINSON'

£4.50

Big single white flowers Aug-Oct, 80cm, robust constitution. An improvement on 'Honorine Joubert'. Bobs Score=8.5. Photo.

ANEMONE x HYBRIDA 'LADY GILMOUR'

£4.50

Large semi-double pink flowers Aug-Oct but the main attraction is the crisped lettuce-like green leaves May-Nov, 50cm. Puts pay to the phrase, "With fronds like these who needs anemones". Bobs Score=8.5.

ANEMONE x HYBRIDA 'QUEEN CHARLOTTE'

£4.50

The true variety. Very large soft semi-double pink flowers with deeper pink bleeding Sep-Nov, 1m. Easy but not dry shade. AGM. Bobs Score=9.5. Photo.

ANEMONELLA THALICTROIDES 'CAMEO'

£8.50

Large single pink flowers of great beauty Mar-May and later, lovely soft pink young growth, 15cm. Bobs Score=9.0. Photo.

ANEMONELLA THALICTROIDES SEMI-DOUBLE WHITE

£6.50

White flowers over delicate foliage Mar-Jun and Aug-Sep, 18cm. Moist shade. Bobs Score=7.0. Photo.

ANEMOPSIS CALIFORNICA

£5.50

White cone flower heads Jun-Aug over deep dusky green foliage, 25cm. Photo.

ANTHEMIS 'TINPENNY SPARKLE'

£4.50

Greyish divided foliage and relatively large pale creamy-white daisy flowers Jun-Jul, 60cm. An interspecific hybrid from Elaine Horton. Bobs Score=7.5. Photo.

ANTHEMIS MARSCHALLIANA

£4.50

Neat. Nice divided grey-white foliage, ?white flowers summer, herbaceous, 30cm. Sun. Synonym A.rudolphiana.

ANTHEMIS TINCTORIA 'E.C.BUXTON'

£4.50

Superb acid-yellow flowers, Jun-Aug, 45cm. Sun or half shade. Easy. Bobs Score=7.5. Photo.

ANTHEMIS TINCTORIA 'SAUCE HOLLANDAISE'

£4.50

Creamy yellow daisies Jun-Aug, bushy shape 60cm. Bobs Score=7.0. Photo.

APIOS AMERICANA

£5.50

Dense clusters of violet-scented flared beige and chocolate-maroon pea flowers Aug-Sep from the leaf axils, 2-3m. The tubers used as a source of starch by Native Americans. Easy herbaceous perennial climber for semi-shade or sun. Bobs Score=8.0. Photo.

AQUILEGIA COERULEA var.OCHROLEUCA NNS 06-65

£4.50

7cm wide relatively flat spurred creamy-white flowers with orange anthers - very stylish, Apr-Jun, pale green foliage, 50cm. Seed coll. Wasatch Plateau, Sanpete Co. UT. 10,675' altitude.

AQUILEGIA COERULEA var.OCHROLEUCA NNS 06-67

£4.50

Relatively flat spurred creamy-white to pink or violet flowers - very stylish, Apr-Jun, non-overlapping glaucous green foliage, 50cm. Seed coll. Markagunt Plateau, Iron Co. UT. 11,225' altitude.

AQUILEGIA COERULEA var.OCHROLEUCA NNS06-66

£4.50

Pale pink flowers Apr-Jun, 55cm. Seed coll.Wasatch Range, Salt Lake Co. UT. 9600' altitude.

AQUILEGIA FLAVESCENS var.FLAVESCENS NNS06-72

£4.50

Heads of nodding pale yellow flowers with golden-yellow centres Apr-Jun, 60cm. Seed coll.Uinta Mountains, Duchesne Co. UT. 9000' altitude.

AQUILEGIA OXYSEPALA

£4.50

Burgundy and cream flowers May-Jul,35cm. Japan. Syn.A.buergeriana var.oxysepala. Bobs Score=6.5.

AQUILEGIA VIRIDIFLORA

£4.50

Green and chocolate flowers May-Jun, neat 30cm, very pretty leaves. Easy. Bobs Score=7.5. Photo.

AQUILEGIA VULGARIS 'POM POM CRIMSON'

£4.50

The (isolated) parent has smart rounded fully-double strong clean maroon flowers with white centres May-Jul, 70cm. Lovely. Easy. Bobs Score=7.0. Photo.

AQUILEGIA VULGARIS double pale blue

£4.50

Lovely and very long-lived. Tight soft double powder-blue and greeny-cream flowers set off with stellate creamy-green sepals May-Jun, 50cm. May be A.'Debutante'. Bobs Score=8.5. Photo.

AQUILEGIA VULGARIS var.FLORE PLENO black

£4.50

Good very dark double flowers Apr-Jun, 85cm. Easy. Robust. Bobs Score=6.5. Photo.

AQUILEGIA VULGARIS var.STELLATA 'GREENAPPLES'

£4.50

Double whitish green flowers with complimentary foliage May-Jul, 60cm. Easy and nice. Bobs Score=8.0. Photo.

ARENGA MICRANTHA

£5.50

Small neat hardy palm, 2m. SE Tibet. Nanophanerophyte! Rare enough to be rediscovered. Young cheap plants to nurture. Bare your teeth and practice saying this.

ARISAEMA aff.ERUBESCENS

£6.50

Delicate parasol leaves, green to mahogany flowers held half way up the leaf petiole May-Jun, 90cm.

ARISAEMA CANDIDISSIMUM

£8.50

Hardy, highly scented cream and pink arum flowers Jun-Jul, 45cm, tropical-looking trifoliate leaves Jul-Sep, 55cm. Good soil, half shade. AGM. The flowers scent a room and last longer if picked. Happy even in my very alkaline clay. Late appearer. Bobs Score=9.0. Photo.

ARISAEMA CANDIDISSIMUM Yunnan Form

£10.50

Sweetly scented puce striped white flowers with green flushed bases Jun-Jul, large tropical-looking trifoliate leaves 55cm (maybe shorter when younger).

ARISAEMA CANDIDISSIMUM var.ALBUM

£15.50

Sweetly scented white flowers with green flushed bases Jun-Jul, large tropical-looking trifoliate leaves 55cm (maybe shorter when younger). Bobs Score=7.5. Photo.

ARISAEMA cf.CONSANGUINEUM ACE 2031

£6.50

Like A.consanguineum but bigger. Collected from calcified hillside, S.San-ba (27degrees 30 minutes 12 seconds N; 100.02.28 E.) 2600m.altitude. Plants growing among shrubs in rocky ground.

ARISAEMA CILIATUM

£6.50

Clean brown and white striped arum flowers Jun-Jul, enormous decorative parasol leaves (which get bigger year by year), lovely mottled shoots, late appearer, ultimately 1.2m. Rich shade. Hardy and happy in my very alkaline clay. Bobs Score=8.0.

ARISAEMA CILIATUM var.LIUBAENSE CT 369

£6.50

Like the normal species but stoloniferous. Clean brown and white striped arum flowers Jun-Jul, enormous decorative parasol leaves, lovely mottled shoots, 1m. Rich shade. Bobs Score=8.0.

ARISAEMA CONSANGUINEUM

£6.50

Attractive palmately divided leaves. Green and brown spathes with white stripes Jun-Jul, 75cm. or larger when happy. Hardy and happy outside in shade in good soil.

ARISAEMA CONSANGUINEUM 'MARBLED LEAF' GG 92128

£8.50

Attractive palmately divided dark green leaves with white central stripe to each leaflet. Brown spathes with white stripes Jun-Jul, 75cm. or larger when happy. Hardy and happier outside in sheltered shade in good soil. Bobs Score=8.0. Photo.

ARISAEMA CONSANGUINEUM GG 98138 'QINLING'

£6.50

(From Mt.Qinling, Shaanxi, China.) Attractive palmately divided leaves. Green spathes with white stripes in Chinese forms.

ARISAEMA CONSANGUINEUM PJ 277

£6.50

Collected Hengduan Mountains, NW Yunnan. Attractive palmately divided leaves. Green spathes with white stripes Jun-Jul, 75cm. or larger when happy. Hardy and happier outside in sheltered shade in good soil.

ARISAEMA CONSANGUINEUM VARIEGATED

£10.50

Each one of the many palmate leaflets has a central silvery band - very striking, green and white striped flowers Jun-Aug, 70cm. Good soil in shade. Yunnan

ARISAEMA COSTATUM

£6.50

Warm reddish-brown spathe with white stripes, palmate leaves with reddish outlining, red shoots in spring, 60cm. Bobs Score=8.5. Photo.

ARISAEMA FARGESII

£10.50

Large dark brown-red or red flowers with dramatic white striping. The tip of the spathe ends in a narrow, congested mass of red thread May-Jun. Large trifoliate leaves (like A. candidissimum), 50cm. Photo.

ARISAEMA FRANCHETIANUM

£6.50

Short hooded brown spathes striped white. Similar to and possibly a synonym of A.rhombiforme.

ARISAEMA JACQUEMONTII

£6.50

Slender green and white striped flowers Jun-Jul, 45cm. Shade. Hardy and probably a lime-hater. Bobs Score=4.5. Photo.

ARISAEMA KIUSHIANUM

£6.50

Yellow/green and purple striped flowers with black whipcord spadices at ground level Apr-May, lovely pedate foliage, 60cm. Photo.

ARISAEMA LICHIANGENSE

£10.50

Purple and pale greeny-white striped flowers Jun-Jul, 3-lobed) leaves like A.candidissimum often with a blue-green cast, 30cm. Easy.

ARISAEMA LINGYUNENSE

£10.50

Dark red-brown spathes with erect flat fan-shaped heads figured with brown May-Jun, large green trifoliate foliage, 80cm. Good soil in moist shade. Photo.

ARISAEMA OMEIENSE

£6.50

Tan, brown and green marked hooded flowers with lateral auricula Jun-Jul, palmate foliage, 60cm.

ARISAEMA ROBUSTUM

£6.50

Pale green flowers - green-striped brown inside Apr-Jun, 30cm. Prolific. Early to leaf and flower Apr-May. Bobs Score=7.0. Photo.

ARISAEMA SP. Chen Yi A-97

£12.50

The flowers are an unusual colour (by repute). Normal-sized deep yellow flowers Jun-Aug, marbled foliage, 1m. Photo.

ARISAEMA SPECIOSUM

£6.50

Violet, pink and white arum flowers Apr-May, pretty divided leaves, 30cm. Sheltered shady site with good soil. Bobs Score=5.0. Photo.

ARISAEMA TAIWANENSE

£8.50

Brown and white striped flowers Jun-Jul, 55cm. Reckoned to be very special but it seems fairly ordinary to me (and I certainly have the right plant). Bobs Score=7.5. Photo.

ARISAEMA TAIWANENSE 'SILVER LEAF'

£15.50

Large dramatically silvered leaves, brown and white striped flowers Jun-Jul, 60cm. Bobs Score=8.5.

ARISAEMA THUNBERGII subsp.URASHIMA

£6.50

Broad brown spathe with a white throat and a long whipped extension Apr-May, 30cm. Leafs and flowers together plant in a cold site to delay emergence until frost past. Bobs Score=7.5. Photo.

ARISAEMA TORTUOSUM CC 4596

£6.50

Green-rimmed white arum flowers Jun-Jul, elegant leaves from extraordinary spotted pale green stems which develop and persist after the flowers and are almost as good, 60cm. Robust grower, good woodland soil. Syn.A.helleborifolium.

ARISAEMA TRIPHYLLUM

£6.50

Green and puce or darker - purple-black and white arum-like flower Jun-Jul, 45cm. Easy in good soil in shade. Good leaves. Bobs Score=6.0.

ARISARUM PROBOSCIDEUM

£4.50

Mouse Plant. Strange lurking brown flowers with long tails Mar-May, 10cm. Easy even dry shade. Fresh from Disneyland. Bobs Score=4.5. Photo.

ARISARUM VULGARE var.TYPICUM

£4.50

Snake going down the hole. Small gently marked greyish-green foliage Oct-Mar, brown striped white flowers with a green and brown hood, spadix long, exserted and golden Oct-Jan, wintergreen, 12cm. Bobs Score=6.5. Photo.

ARISTEA ECKLONII

£4.50

Deep strong blue flowers in clusters Jun-Jul, dark leaves, clumping, 60cm. Hardy for me. Bobs Score=7.0. Photo.

ARTEMISIA 'POWIS CASTLE'

£4.50

Useful silver-leaved shrub to 75cm, more or less evergreen, no flowers. Any soil, sun or half shade. AGM. Bobs Score=7.0.

ARTEMISIA FRIGIDA NNS 06-84

£4.50

Cushions of dissected softly hairy blue-grey foliage, insignificant yellowish flowers May-Jul. Collected exposed alpine ridge crests on gravel soils derived from diorite, Henry Mtns., Garfield Co., UT. 11,175' altitude. AGM. Sun, drought tolerant.

ARUM 'CHAMELEON'

£4.50

Clumps of lovely large round grey marbled leaves Oct-Jun overwinter, broad pale green flowers Apr-May, spikes of vermilion berries Aug-Sep. Easy. Bobs Score=8.0. Photo.

ARUM CONCINNATUM 'VARIEGATA'

£6.50

Mid green leaves blotched in creamy-yellow, yellow spathes, 25cm. Easy.

ARUM CYRENAICUM

£4.50

Pale yellow-green spathe warmly infused with brick-red around the edge, chocolate spadix, Apr-May, broad foliage, 30cm. Bobs Score=7.0. Photo.

ARUM DIOSCORIDIS var.DIOSCORIDIS JCA 195.159

£4.50

Dark wintergreen foliage, maroon-black spathe with yellow spadix, May-Jun, 25cm. Seed collected Simi, Greece.

ARUM DIOSCORIDIS var.SMITHII

£4.50

Remarkable deep maroon blotches and spots on flat, open, creamy spathes Apr-May, green leaves overwinter. Hardy. Bobs Score=7.0. Photo.

ARUM ITALICUM subsp.ITALICUM 'SPARKLER'

£4.50

Broken cream leaf venation on dark foliage giving a sparkling effect. Foliage Oct-Jun overwinter, flowers Apr-May, vermilion berries Aug-Sep, 30cm. Bobs Score=8.0. Photo.

ARUM ITALICUM subsp.NEGLECTUM 'MISS JANAY HALL'

£4.50

Leaves with creamy-yellow speckled variegation Oct-May overwinter, broad green and cream flowers Apr-May, 30cm. Easy even dry shade. From Peter Hall. Bobs Score=8.0.

ARUM MACULATUM 'PAINTED LADY'

£5.50

Cream and pale yellow variegated wild arum, pale green spring flowers also variegated, 25cm. Bobs Score=7.0. Photo.

ARUM PICTUM L/Co.28

£4.50

Distinct from A.italicum Pictum. Collected Corsica by Dr.Chris Lovell. Finely pictate leathery winter leaves preceded by a black-maroon flower Sep-Oct, 20cm. Meant to be tender but I've never lost it outside. Likes dry shade.

ARUNCUS 'HORATIO'

£5.50

Aruncus aethusifolius x A.dioicus - size from A.dioicus and flower form from A.aethusifolius. Delicately held cream flower heads with its parts pointed and bronze-tinted Jun-Aug, divided golden-green foliage, bronze stems, 1m. Easy. Bred by Ernst Pagels. Bobs Score=8.0.

ARUNCUS DIOICUS

£4.50

Tough and graceful plant to 1.5m. with large cream flower plumes Jun-Jul. Easy. Bobs Score=6.0. Photo.

ARUNCUS DIOICUS 'KNEIFFII'

£4.50

Delicate bronzey cut foliage, cream flowers Jun-Jul, neat compact and shorter than the species 60cm. Easy. Bobs Score=7.0. Photo.

ASARUM CAMPANIFLORUM

£6.50

Medium-sized dark red-brown rimmed pale green cupped flowers with redder clock-faced guide lines Mar-Apr, nice glossy spear-shaped evergreen foliage 18cm. Shade. Photo.

ASARUM CAUDATUM

£4.50

Big starry brown-maroon flowers at ground level Mar-May, evergreen heart-shaped foliage 15cm. Vigorous. Bobs Score=6.0. Photo.

ASARUM DELAVAYI clone 2

£8.50

Enormous black, white and khaki flowers 15cm wide, large slightly pewter-marked deep green leaves. Bobs Score=8.0. Photo.

ASARUM EUROPEUM

£4.50

Neat glossy dark evergreen leaves in shade, 12cm. Small unobtrusive brown flowers May-Jun. Roots smell of ginger. Even dry shade. Newly awarded an AGM. Bobs Score=6.0. Photo.

ASARUM KUMAGEANUM

£8.50

Large dark evergreen viola-shaped silver speckled leaves. Flowers 2cm.wide, black with a green ruffled rim Aug-Oct, 15cm. Unusually, late summer active when it is very smart. Bobs Score=8.0.

ASARUM MAXIMUM 'SILVER PANDA'

£5.50

Large evergreen silver-marked foliage, prolific clusters of large white-eyed black trilobed flowers Feb-Jun, 25cm. Easy in shade or keep as a magnificent pot plant. Drama incarnate. Bobs Score=9.0.

ASARUM NANIFLORUM 'ECO-DÉCOR'

£5.50

Neat rounded dark green evergreen foliage marbled with paler green - lovely, small yellow-brown and white flowers Apr-Jun, 10cm. Bobs Score=6.5.

ASARUM SP. Chen Yi 5

£6.50

Very startling very black and very white flowers on the ground, Jul-Sep (asarums normally flower in spring), two tone patterned and white speckled arrow-shaped evergreen foliage,18cm. From 800m.altitude, China. Nice.

ASARUM SPLENDENS

£5.50

Big dark evergreen silver-patterned arrow-shaped foliage, clusters of dramatic dark brown and white banded flowers Jan-Jun, 18cm. Very effective in shade. Bobs Score=8.5. Photo.

ASARUM TAIPINGSHANIANUM B&SWJ 1688

£6.50

Silver marked leaves, spreader.

ASPHODELINE LIBURNICA

£4.50

Clean lemon and green flowers May-Aug, slender grey growth, 70cm. Sun. The flowers open in the afternoon and are very sharply coloured. Easy. Bobs Score=7.5.

ASPHODELINE LUTEA

£4.50

Spikes of large yellow starry flowers May-Jun over useful evergreen grey leaves, ornamental seed heads, 65cm. Easy. Bobs Score=7.5. Photo.

ASPHODELINE TAURICA

£4.50

Spikes of white flowers, 50cm. Turkey.

ASPIDISTRA 'CHINA STAR'

£12.50

Short broad yellow speckled evergreen leaves, 50cm. Collected by Jim Waddick (QCS-IIM-L13 in China, via Tony Avent. Requires deep shade. Bobs Score=7.0. Photo.

ASPIDISTRA 'CHINA SUN'

£8.50

Short broad yellow speckled evergreen leaves, 55cm. Collected by Jim Waddick (QCS-III-L) in China, via Tony Avent. Requires deep shade. Bobs Score=7.0. Photo.

ASPIDISTRA 'MILKY WAY'

£12.50

Dark, white spotted leaves like the sky at night, 45cm. Evergreen and hardy in very dark dry shade under trees and shrubs. Bright pink starry flowers Aug-Dec at ground level. Good cut foliage. Or, it makes a good houseplant. Protect from slugs and snails. Bobs Score=7.0. Photo.

ASPIDISTRA CAESPITOSA 'JADE RIBBONS'

£12.50

Tall narrow dark evergreen leaves, 60cm. Collected by Jim Waddick in China, via Tony Avent. Requires deep shade. Bobs Score=6.0.

ASPIDISTRA ELATIOR

£8.50

Hardy evergreen for dark shade, even dry shade, ?extra broad-leaved form, 40cm. AGM. Good cut foliage. Bobs Score=7.0. Photo.

ASPIDISTRA ELATIOR 'AKEBONO'

£8.50

The dark green leaves have a central narrow white streak, 60cm. An old japanese variety. Bobs Score=7.0.

ASPIDISTRA ELATIOR 'HOSHI-ZORA'

£12.50

Old Japanese variety, tall yellow faintly speckled evergreen leaves, 85cm. Bobs Score=7.0.

ASPIDISTRA LINIARIFOLIA 'LEOPARD'

£12.50

Tall narrow evergreen gold speckled foliage, 70cm. Collected by Jim Waddick in China, via Tony Avent. Requires deep shade. Bobs Score=7.0.

ASPIDISTRA LONGILOBA

£12.50

Long spotted and lined dark evergreen foliage, red flowers. Bobs Score=7.5.

ASPIDISTRA MINUTIFLORA

£12.50

Narrow evergreen foliage with a paler midstripe, 25cm.

ASPIDISTRA SP/VAR. coll.China BSWJ

£12.50

Relatively short broad ovate-lanceolate substantial dark glossy green leaves with central longitudinal paler green markings and a slightly crimped edge, 30cm. Evergreen. A good houseplant for dark cool places (and warmer ones) and possibly hardy. Bobs Score=9.0.

ASPIDISTRA ZONGBAYI

£12.50

Relatively short (25cm) spotted and lined dark evergreen foliage, dark red flowers Feb-Jun.

ASPLENIUM SCOLOPENDRIUM 'CRISPUM BOLTON'S NOBILE'

£8.50

Broad evergreen seersucker fronds (hart's tongue fern) - wonderful, hardy. Shade and not very dry. 40cm. AGM. Special and rare. Bobs Score=9.0. Photo.

ASTELIA 'RED DEVIL'

£5.50

Relatively broad pointed red-silver evergreen foliage, 30cm.

ASTELIA CHATHAMICA 'SILVER SPEAR'

£5.50

Startling silver sword leaves. Reckoned to be tenderish but it withstood Worcester winters 1995-2000 (when it finally died), 1-1.5m. AGM. (Mine is the most astonishing and undemanding pot plant.) Mercurial especially when lit at night. Bobs Score=8.0.

ASTELIA NERVOSA 'WESTLAND'

£5.50

Rosettes of red flushed silver evergreen foliage, 60cm. Hardy. Bobs Score=7.5. Photo.

ASTER 'FELLOWSHIP'

£4.50

Superb large double pinky mauve flowers Aug-Oct,75cm. Good soil, sun or half shade. Mildew resistance due to A.laevis ancestry? AGM. Bobs Score=9.0. Photo.

ASTER 'LITTLE CARLOW'

£4.50

Masses of trouble-free (mildew-free) blue flowers Sep-Oct, 1.3m. Easy, It literally hurts the eyes to look at it in flower because the colour is so intense. AGM. Bobs Score=9.0. Photo.

ASTER 'PIXIE DARK EYE'

£4.50

This is an unusually clear and well coloured relatively mildew-free ericoides hybrid. Profuse medium-small prettily held deep red-purple flowers with yellow middles Sep-Oct, 80cm. Good cut flower. Bobs Score=8.5. Photo.

ASTER 'PORZELLAN'

£4.50

Stiffly upright stems have pale grey-indigo flowers Aug-Oct, very dark green foliage 1m. Little or no mildew. Nice. Bobs Score=8.0. Photo.

ASTER 'PRIMROSE PATH'

£4.50

Any Charles Oliver selection is potentially of great interest. Pretty blue flowers with soft maroon-purple centres in open sprays Aug-Oct, 75cm. Looks like an Aster schreberi hybrid which would explain its dry shade tolerance. Bobs Score=8.0. Photo.

ASTER 'SUNHELENE'

£4.50

A new relatively mildew-free hybrid. Delightful neat double mauve-blue flowers which make a perfect picture with adjacent unopened greyish green buds Aug-Oct, 110cm. Good cut flower. Like A.'Marie Ballard' without the mildew. Bobs Score=8.0. Photo.

ASTER 'SUNPLUM'

£4.50

This is an unusually clear and well coloured relatively mildew-free ericoides hybrid bred in Israel. Profuse small prettily held deep red-purple flowers with greenish yellow middles Aug-Oct, 80cm. PVR - unlicensed propagation for resale prohibited. Bobs Score=8.5. Photo.

ASTER 'SUNQUEEN'

£4.50

A new relatively mildew-free ericoides hybrid. Delightful neat purple flowers Sep-Oct, 55cm. Good cut flower. Bobs Score=8.0. Photo.

ASTER AMELLUS 'KING GEORGE'

£4.50

Large violet daisy flowers Aug-Oct, mildew-proof plant, 30cm. Sun or half shade, not too dry. AGM. Lax habits. Bobs Score=8.0. Photo.

ASTER AMELLUS 'PINK ZENITH'

£4.50

Compact mildew-proof pink flowers Aug-Oct, 50cm. Good soil, sun or part shade. Lovely. Bobs Score=8.0.

ASTER AMELLUS 'ROTFEUER'

£4.50

'Redfire'. Compact mildew-proof deep pink flowers Aug-Oct, 50cm. Good soil, sun or part shade. Lovely. Bobs Score=8.0.

ASTER AMELLUS 'VIOLET QUEEN'

£4.50

Compact plant with lovely pale centred deep violet flowers Sep-Nov, 30cm. Good soil, no competition, sun. AGM. Disease-free and long-lived. Bobs Score=9.5. Photo.

ASTER DIVARICATUS 'EASTERN STAR'

£4.50

Larger starry white flowers than normal Jun-Sep, wiry dark stems, dark bluish-green foliage (larger than the species), 45cm. Easy even dry shade. Selected by Roger Raiche an American plantsman. Bobs Score=6.0.

ASTER ERICOIDES 'ERLKÖNIG'

£4.50

Abundant small pale purple flowers with soft maroon centres Sep-Oct, dark disease-free foliage, 60cm. 1902.

ASTER ERICOIDES 'VIMMER'S DELIGHT'

£4.50

Lots of small white flowers amongst grey-green foliage Sep-Nov, burgeoning form 80cm. Easy. Nice. Bobs Score=8.0. Photo.

ASTER ERICOIDES f.PROSTRATUS 'SNOW FLURRY'

£4.50

Exceptional in form. Low spreading stiff-branched prostrate species with masses of small white flowers Sep-Oct, 15cm x 70cm. Easy and effective even in leaf. Wonderful in a big pot where it will cascade over the sides. Bobs Score=8.5.