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YUCCA ALOIFOLIA F.PURPUREA

Spanish dagger. Reddish spiky leaves from a tall barrel-shaped stem, stout panicles of waxy white flowers tinged with purple. Hot dry dry sites when it is hardy to -18C. So far it has taken -10C at the nursery. Virginia to Florida and the Caribbean. . Bob's score = 7

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YUCCA ALOIFOLIA f.PURPUREA

YUCCA ANGUSTISSIMA NNS 99-509

Asparagaceae

Rosettes with very many crowded narrow pale green leaves, large campanulate purple tinged cream flowers in an unbranched raceme, 1.5m. Seed collected 6975 feet altitude, above Castle Valley, La Sal Mtns, Grand Co, UT. Hardy to -23C. . Bob's score = 8

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YUCCA ANGUSTISSIMA NNS 99-509

YUCCA ARIZONICA

Asparagaceae

Rosettes of pale grey-green leaves edged white. Eventually forms a small tree.

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YUCCA ARIZONICA

YUCCA BACCATA

Asparagaceae

Rosettes of broad bluish grey-green leaves edged with white filaments, 1.2m. large purple-flushed cream bells in pendant panicles of, 1m x 1.3m. Very cold hardy to at least -30C. USA, Mexico. RHS Hardiness Rating: H7 .

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YUCCA BACCATA

YUCCA BACCATA NNS 99-510

Asparagaceae

Very hardy. Evergreen rosettes of broad stiff blue-grey white margined foliage with curly marginal fibres, large purple-flushed cream bells in pendant panicles of flower half hidden in the nest of leaves and edible banana-like fruits, 1m x 1.3m. Hardy to RHS Hardiness Rating: H7 .

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YUCCA BACCATA NNS 99-510

YUCCA BREVIFOLIA

Asparagaceae

Joshua tree - largest USA yucca Tufts of grey-blue-green spiked foliage on a wide trunk, 9-24 x 4-9m. Panicles of 7cm long greenish-cream flowers. Hardy in W.Britain (Zone 9). Up to 3200m altitude, Mohave Desert.

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YUCCA BREVIFOLIA

YUCCA CARNEROSANA

Asparagaceae

Trunked hardy yuccas with spherical evergreen heads, ivory flowers in compact masses Jul-Aug, 1-2m. Coll.by Sra.Parras, Mexico. The leaves are broad (for their length), stiff, slightly twisted and tapered either end. RHS Hardiness Rating: H4 .

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YUCCA CARNEROSANA

YUCCA CERNUA

Asparagaceae

Relatively tall rosettes of spined blue-green succulent evergreen foliage, ultimately tall heads of cream flowers 3m. Endangered species described in 2003. Texas. RHS Hardiness Rating: H5 .

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YUCCA CERNUA

YUCCA DESMETIANA

Asparagaceae

Relatively soft glaucous blue foliage, red-flushed when stressed form a a relatively tall cylindrical rosette. This is widely regarded as a hybrid between Y.aloifolia and something else rather than a species, although it is propagated from seed. RHS Hardiness Rating: H3 .

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YUCCA DESMETIANA

YUCCA FILAMENTOSA 'GARLAND'S GOLD'

Asparagaceae

Clean bright centrally variegated leaves of golden-yellow. Creamy flowers Jul-Oct, 55 x 65cm. A broader plant with sharper colouring than Yucca Golden Sword which it otherwise resembles. NZ variety.

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YUCCA FILAMENTOSA

YUCCA FILIMENTOSA 'BRIGHT EDGE'

Asparagaceae

Broad evergreen cream and green foliage forms clusters of rosettes, 70cm. Ivory flowers on short stems Jun-Aug. Hardy to at least -30C. New Jersey to Florida and Mississippi. . Bob's score = 8 RHS Hardiness Rating: H7 .

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YUCCA FILIMENTOSA

YUCCA FILIMENTOSA 'COLOR GUARD'

Asparagaceae

Evergreen yellowish-cream leaves edged with green in rosettes which form clusters, relatively short spikes of ivory flowers Jul-Oct, leaves 70cm, flowers 1m. Leaves colour reddish in winter. . Bob's score = 8

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YUCCA FILIMENTOSA

YUCCA FLACCIDA 'GOLDEN SWORD'

Asparagaceae

Good evergreen yellow variegated leaves in a relatively small rosette that clumps up well 45cm, relatively short heads of cream flowers Jul-Sep, 65cm. Hardy to at least -26C. . Bob's score = 9 RHS Hardiness Rating: H7 .

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YUCCA FLACCIDA

YUCCA FLACCIDA 'IVORY'

Asparagaceae

This is the precocious and floriferous form which reliably flowers May-Jul, spires of ivory flowers, neat rosettes of blue-green foliage, 75cm. North Carolina to Alabama. Hardy to -30C and probably lower. . Bob's score = 7.5

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YUCCA FLACCIDA

YUCCA GLAUCA

Asparagaceae

Rare species hardy to at least -35C even in moist conditions. Blue-grey narrow leaves, spikes of greenish-white fragrant flowers May-Nov, 1m. Canada to New Mexico. Seed collected high in Colorado. . Bob's score = 8

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YUCCA GLAUCA

YUCCA GLAUCA NNS 99-511

Asparagaceae

Rare species hardy to at least -35C even in moist conditions. Blue-grey narrow leaves, spikes of greenish-white fragrant flowers May-Nov, 1m. Seed collected 6450 feet altitude, Encinosa Creek, Colfax Co, NM. . Bob's score = 8

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YUCCA GLAUCA NNS 99-511

YUCCA GLORIOSA

Asparagaceae

Broad stiff dark grey-green leaves in spiky evergreen rosettes, ivory flowers between Jul and Nov, 65cm, flowers 1.5m. hardy to -12C and possibly below. Easy.

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YUCCA GLORIOSA

YUCCA GLORIOSA 'BRIGHT STAR'

Asparagaceae

Bright rosettes of creamy-yellow fleshy foliage turns apricot in cold weather, 55cm. A new winter (and summer) delight. PVR - propagation for resale prohibited (Walbristar). . Bob's score = 10 RHS Hardiness Rating: H7 .

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YUCCA GLORIOSA

YUCCA GLORIOSA 'CREAM HEART'

Asparagaceae

The variegation is the reverse of usual - evergreen creamy yellow-centred leaves in rosettes, ivory flowers Sep-Nov, 2m. RHS Hardiness Rating: H4 .

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YUCCA GLORIOSA

YUCCA GLORIOSA 'DODO'

Asparagaceae

Clumped habit, pale green centred foliage.

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YUCCA GLORIOSA

YUCCA GLORIOSA 'MARGARITAVILLE'

Asparagaceae

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YUCCA GLORIOSA

YUCCA GLORIOSA 'MOON FROST'

Asparagaceae

Broad cream-striped and splashed sword-like leaves in a squat rosette. Showy panicles of white flowers Jul-Oct, 1.5m. Hardy to -7C and probably below. New introduction. South Carolina to Louisiana. . Bob's score = 8.5

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YUCCA GLORIOSA

YUCCA GLORIOSA 'VARIEGATA'

Asparagaceae

Broad stiff dark grey-green leaves edged cream (with pink flashes) in spiky evergreen rosettes, ivory flowers in some years any time between Jul and Nov, 65cm, flowers 1.5m. Easy. . Bob's score = 9 RHS Hardiness Rating: H6 .

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YUCCA GLORIOSA

YUCCA HARRIMANIAE

Asparagaceae

Short rosettes of white-filamented leaves to 25cm. Greenish-white flowers among the leaves Jun-Aug, 50cm. Colorado to New Mexico. RHS Hardiness Rating: H7 .

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YUCCA HARRIMANIAE

YUCCA KANABENSIS

Asparagaceae

Rare species from Utah, clusters of small suckering rosettes of blue foliage.

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YUCCA KANABENSIS

YUCCA LINEARIFOLIA

Asparagaceae

Like Yucca rostrata but better with narrower longer foliage in neat rounded (spiny) puffs! RHS Hardiness Rating: .

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YUCCA LINEARIFOLIA

YUCCA NEW VARIEGATED FROM ALEX HEIM

Asparagaceae

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YUCCA new variegated from Alex Heim

YUCCA RECURVIFOLIA 'BANANA SPLIT'

Asparagaceae

Soft evergreen rosettes of broad drooping foliage with a wide central golden band that reddens in winter and with reddened leaf bases, heads of fragrant creamy-white flowers Aug-Oct, 1m. RHS Hardiness Rating: H5 .

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YUCCA RECURVIFOLIA

YUCCA RECURVIFOLIA 'GOLD STREAM'

Asparagaceae

Hardy evergreen species, rosettes of broad drooping foliage with a wide central golden-green band. Selected by Sean Hogan in Oregon. . Bob's score = 6 RHS Hardiness Rating: H5 .

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YUCCA RECURVIFOLIA

YUCCA RECURVIFOLIA 'MEDIO PICTA'

Asparagaceae

Hardy evergreen species, rosettes of broad drooping foliage with a wide central golden-green band. Selected by Sean Hogan in Oregon. RHS Hardiness Rating: H5 .

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YUCCA RECURVIFOLIA

YUCCA RIGIDA

Asparagaceae

The blue yucca. Attractive rosettes of narrow blue leaves eventually forming a branched trunk. Creamy flowers in a head to 60cm above the foliage. Hardy to -12C. Seed coll.Valle Zaragoza, Chihauhau, Mexico.

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YUCCA RIGIDA

YUCCA RIGIDA DJF 753

Asparagaceae

The blue yucca. Attractive rosettes of narrow blue leaves eventually forming a branched trunk. Creamy flowers in a head to 60cm above the foliage. Hardy to -12C or less.

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YUCCA RIGIDA DJF 753

YUCCA ROSTRATA

Asparagaceae

Wonderful spherical rosettes of narrow (and relatively soft!) bluish evergreen foliage (eventually on branched trunks like a superlative miniature palm), 1.5m, bright white heads of flower above the leaves. Easy. . Bob's score = 10 RHS Hardiness Rating: H7 .

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YUCCA ROSTRATA

YUCCA ROSTRATA 'SAPPHIRE SKIES'

Asparagaceae

Rosettes of even narrower (and relatively soft!) blue evergreen foliage (eventually on branched trunks like a superlative miniature palm), 1.5m, heads of white flowers. Easy. A Sean Hogan selection (he's good). . Bob's score = 10 RHS Hardiness Rating: H7 .

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YUCCA ROSTRATA

YUCCA RUPICOLA

Asparagaceae

Twisted leaf yucca. Small rosettes of greyish green foliage with sharp yellow margins 45cm, cream flowers Jul-Sep, 1m. RHS Hardiness Rating: H5 .

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YUCCA RUPICOLA

YUCCA SCHIDIGERA

Asparagaceae

Arborescent yucca 1-5m. Leaves up to 1.3m long, white or creamy flowers tinged with lavender, 5cm.long. Hardy to -18C. California and N.Mexico.

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YUCCA SCHIDIGERA

YUCCA SCHIDIGERA NNS 03-597

Asparagaceae

Arborescent yucca 1-5m. Leaves up to 1.3m long, white or creamy flowers tinged with lavender, 5cm.long. Hardy. California and N.Mexico.

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YUCCA SCHIDIGERA NNS 03-597

YUCCA SCHOTTII

Asparagaceae

Tree yucca to 5m, spikes of white flowers Sep-Oct, glossy leaves, heads of white flowers. Hardy beyond -23C even in moist climates. USA, Mexico. RHS Hardiness Rating: H7 .

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YUCCA SCHOTTII

YUCCA THOMPSONIANA

Asparagaceae

Wonderful spherical of narrow bluish evergreen foliage (eventually on branched trunks like a superlative miniature palm), 1m, bright white heads of flower above the leaves. Easy, utterly hardy even in wet climates. Often subsumed within Yucca rostrata but

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YUCCA THOMPSONIANA

YUCCA TORREYI

Asparagaceae

Hardy. Stiff curved dark green leaves with brown margin in untidy rosette, heads of creamy-white flowers in heads half hidden in the foliage. Hardy over -22C even in moist climates. USA, Mexico. . Bob's score = 4

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YUCCA TORREYI

YUCCA WHIPPLEI

Asparagaceae

Long narrow pale blue-grey leaves in a shapely rosette 75cm, wonderful creamy flowers in very very large head Jul-Aug. Hot dry shelter - hardy to -10C. Synonym Hesperoyucca. . Bob's score = 8

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YUCCA WHIPPLEI

YUCCA WHIPPLEI SUBSP.CAESPITOSA NNS 01-412

Asparagaceae

Clump-forming with smaller rosettes. Silvery-blue narrow leaves in a shapely rosette, wonderful creamy flowers in very large head Jul-Aug. Hot dry shelter - hardy to -10C. Western Transverse Ranges, Ventura Co.CA, 4875'. Synonym Hesperoyucca caespitosa.

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YUCCA WHIPPLEI subsp.CAESPITOSA NNS 01-412

YUCCA WHIPPLEI SUBSP.CAESPITOSA NNS 05-696

Asparagaceae

Spiny rosettes of blue-green leaves, 1 x 1.3m. Large heads of creamy flowers Jul-Aug. 2.5m. Collected 5750 feet altitude, San Bernadino Mtns, San Bernadino Co. CA. Synonym Hesperoyucca caespitosa.

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YUCCA WHIPPLEI subsp.CAESPITOSA NNS 05-696

YUCCA WHIPPLEI SUBSP.INTERMEDIA NNS 01-413

Asparagaceae

Spiny rosettes of thinner longer darker green leaves than normal in a wild sleepless night-look, 1 x 1.3m. Creamy flowers in very very large heads Jul-Aug. 3m. Collected 4300 feet altitude, San Emigdio Mtns, Kern Co. CA. Synonym Hesperoyucca intermedia.

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YUCCA WHIPPLEI subsp.INTERMEDIA NNS 01-413

YUCCA WHIPPLEI SUBSP.INTERMEDIA NNS 01-414

Asparagaceae

Spiny rosettes of thinner longer darker green leaves than normal in a wild sleepless night-look, 1 x 1.3m. Creamy flowers in very very large heads Jul-Aug. 3m. Collected 3950 feet altitude, Santa Barbara Co. CA. Synonym Hesperoyucca intermedia.

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YUCCA WHIPPLEI subsp.INTERMEDIA NNS 01-414

YUCCA WHIPPLEI SUBSP.INTERMEDIA NNS 05-697

Asparagaceae

Spiny rosettes of long thin dark green leaves, 1 x 1.3m. Large heads of creamy flowers Jul-Aug. 3m. Collected 3925 feet altitude, Santa Ynez Mtns., Santa Barbara Co., CA. Synonym Hesperoyucca intermedia. . Bob's score = 9.5

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YUCCA WHIPPLEI subsp.INTERMEDIA NNS 05-697

YUCCA WHIPPLEI SUBSP.PARISHII NNS 01-415

Asparagaceae

Spiny rosettes of blue-green leaves, 1 x 1.3m. Very tall very large heads of creamy flowers Jul-Aug. 6m. Collected 4750 feet altitude, San Bernadino Mtns, San Bernadino Co. CA. Synonym Hesperoyucca parishii.

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YUCCA WHIPPLEI subsp.PARISHII NNS 01-415

YUCCA WHIPPLEI SUBSP.PARISHII NNS 05-699

Asparagaceae

Very neat rosettes of blue-green leaves, 45cm. Large heads of creamy flowers Jul-Aug. 1m. Collected 7525 feet altitude, San Bernadino Mtns, San Bernadino Co. CA. Synonym Hesperoyucca parishii. . Bob's score = 9.5

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YUCCA WHIPPLEI subsp.PARISHII NNS 05-699

YUCCA WHIPPLEI SUBSP.PERCURSA NNS 01-416

Asparagaceae

Long grey narrow leaves in a shapely rosette eventually with a trunk, creamy flowers in very very large head. Collected 2875 feet altitude, San Rafael Mtns, Santa Barbara Co, CA. Synonym Hesperoyucca percursa.

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YUCCA WHIPPLEI subsp.PERCURSA NNS 01-416

YUCCA WHIPPLEI SUBSP.PERCURSA NNS 05-700

Asparagaceae

Spiny rosettes of blue-green leaves, 20cm-1m. Tall very large heads of creamy flowers Jul-Aug. 3m. Rhizomatous. Collected 2850 feet altitude, San Rafael Mtns, Santa Barbara Co, CA. Synonym Hesperoyucca percursa.

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YUCCA WHIPPLEI subsp.PERCURSA NNS 05-700

YUCCA WHIPPLEI SUBSP.WHIPPLEI NNS 01-417

Asparagaceae

Long pale green narrow leaves arch to make a shapely rosette, creamy flowers in very very large head. Collected 2025 feet altitude, Santa Ana, Orange Co.CA. This collection will require some frost protection. Synonym Hesperoyucca whipplei.

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YUCCA WHIPPLEI subsp.WHIPPLEI NNS 01-417

YUCCA WHIPPLEI SUBSP.WHIPPLEI NNS 05-701

Asparagaceae

Long pale green narrow leaves arch to make a shapely single ball-shaped rosette, creamy flowers in very very large head, 2m only. Collected from a high altitude, San Jacinto Mtns., Riverside Co., CA. 5175'. Synonym Hesperoyucca whipplei. . Bob's score = 9.5

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YUCCA WHIPPLEI subsp.WHIPPLEI NNS 05-701



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