Yucca

Suggested plants for outdoor cultivation in low winter temperature zones.

Indehiscent-fruited species. Yucca aloifolia* Yucca aloifolia form serratifolia* Yucca baccata Yucca baccata ssp. thornberi* Yucca baccata ssp. vespertina Yucca brevifolia* (from higher regions) Yucca carnerosana* (from higher regions) Yucca decipiens * Yucca elephantipes* (Mexico-from higher regions) Yucca faxoniana* Yucca filifera (from higher regions) Yucca gloriosa* and cultivars robusta, variegata, medio-picta, marginata Yucca grandiflora * Yucca jaliscensis * Yucca lineriafolia * Yucca madrensis * Yucca periculosa * Yucca recurvifolia and cultivated forms Dolomiten and Schwarzwald, Grubenlampe and Lothringen, Rheintal, Vittorio Emanuele Yucca schidigera* (from higher regions) Yucca torreyi * (from higher regions) Yucca treculiana * Yucca schottii * (from higher regions)	25 year old example of Yucca baccata with Colchicum "Lilac Wonder" in bloom in October.

Indehiscent-fruited species.

Yucca aloifolia*
Yucca aloifolia form serratifolia*
Yucca baccata
Yucca baccata ssp. thornberi*
Yucca baccata ssp. vespertina
Yucca brevifolia* (from higher regions)
Yucca carnerosana* (from higher regions)
Yucca decipiens *
Yucca elephantipes* (Mexico-from higher regions)
Yucca faxoniana*
Yucca filifera *(from higher regions)
Yucca gloriosa and cultivars robusta, variegata, medio-picta, marginata
Yucca grandiflora *
Yucca jaliscensis *
Yucca lineriafolia *
Yucca madrensis *
Yucca periculosa *
Yucca recurvifolia and cultivated forms Dolomiten and Schwarzwald, Grubenlampe and Lothringen, Rheintal, Vittorio Emanuele
Yucca schidigera* (from higher regions)
Yucca torreyi * (from higher regions)
Yucca treculiana *
Yucca schottii * (from higher regions)

25 year old example of Yucca baccata with Colchicum "Lilac Wonder" in bloom in October.

Yucca elata in winter 2000, central Europe, 20 year old example in the Hochstatter Garden	Yucca rostrata, snow covered (Garden of Adalbert Schmidt)	Ilse standing beside Yucca elata in bloom in July 2004

Dehiscent-fruited species. Yucca arkansana Yucca arkansana ssp. louisianensis Yucca arkansana ssp. freemanii Yucca angustissima Yucca angustissima ssp. kanabensis Yucca angustissima ssp. toftiae Yucca angustissima ssp. avia Yucca baileyi Yucca baileyi form bella (New Mexico) Yucca baileyi ssp. intermedia Yucca campestris * Yucca coahuilensis * Yucca constricta * Yucca elata Yucca elata ssp. utahensis Yucca elata ssp. verdiensis Yucca filamentosa Yucca filamentosa ssp. concava Yucca filamentosa ssp. smalliana	Yuccas under thick snow in the garden of Adalbert Schmidt

Dehiscent-fruited species.

Yucca arkansana
Yucca arkansana ssp. louisianensis
Yucca arkansana ssp. freemanii
Yucca angustissima
Yucca angustissima ssp. kanabensis
Yucca angustissima ssp. toftiae
Yucca angustissima ssp. avia
Yucca baileyi
Yucca baileyi form bella (New Mexico)
Yucca baileyi ssp. intermedia
Yucca campestris *
Yucca coahuilensis *
Yucca constricta *
Yucca elata
Yucca elata ssp. utahensis
Yucca elata ssp. verdiensis
Yucca filamentosa
Yucca filamentosa ssp. concava
Yucca filamentosa ssp. smalliana

Yuccas under thick snow in the garden of Adalbert Schmidt

Yucca filamentosa and cultivated forms Atlanta, Aureovariegata, Eisbär, Elegantissima, Elite, Florida, Fontäne, Glockenbusch, Glockenriese, Grossglockner, Golden Sword, Herkulessäule, Ivory Tower, Milchstern, Missouri, Morgenglocke, Ohio, Rosemarie, Rosenglocke, Schellenbaum, Schneefichte, Schneetanne, St. Louis Yucca flaccida and cultivated forms Golden Sword, Garland Gold, Bright Edge, Bayerwald, Bergkristall, Diamant, Nürnberg Yucca glauca and forms South Dakota, Nord Dakota, Montana, Nebraska Yucca glauca ssp. albertana Yucca glauca ssp. stricta Yucca harrimaniae Yucca harrimaniae ssp. gilbertiana Yucca harrimaniae ssp. neomexicana Yucca harrimaniae ssp. sterilis Yucca karlsruhensis (Yucca x Yucca glauca) Yucca nana Yucca pallida Yucca reverchoni * Yucca rigida * Yucca rupicola * Yucca rostrata * Yucca thompsoniana * Yucca whipplei * Yucca whipplei ssp. eremica* (northern California where it is fairly well protected by oak trees). *Other forms: Yucca chilensis, Yucca cochabamba, Yucca danica, Yucca flexilis.* * = Guarding against moisture during the winter months.	Adult example of Yucca elata. Note the inflorescence (not in bloom) app. 4 m high similar to Yucca whipplei.	Yucca linearifolia in wintertime

Yucca filamentosa and cultivated forms Atlanta, Aureovariegata, Eisbär, Elegantissima, Elite, Florida, Fontäne, Glockenbusch, Glockenriese, Grossglockner, Golden Sword, Herkulessäule, Ivory Tower, Milchstern, Missouri, Morgenglocke, Ohio, Rosemarie, Rosenglocke, Schellenbaum, Schneefichte, Schneetanne, St. Louis
Yucca flaccida and cultivated forms Golden Sword, Garland Gold, Bright Edge, Bayerwald, Bergkristall, Diamant, Nürnberg
Yucca glauca and forms South Dakota, Nord Dakota, Montana, Nebraska
Yucca glauca ssp. albertana
Yucca glauca ssp. stricta
Yucca harrimaniae
Yucca harrimaniae ssp. gilbertiana
Yucca harrimaniae ssp. neomexicana
Yucca harrimaniae ssp. sterilis
Yucca karlsruhensis (Yucca x Yucca glauca)
Yucca nana
Yucca pallida
Yucca reverchoni *
Yucca rigida *
Yucca rupicola *
Yucca rostrata *
Yucca thompsoniana *
Yucca whipplei *
Yucca whipplei ssp. eremica* (northern California where it is fairly well protected by oak trees).

Other forms: Yucca chilensis, Yucca cochabamba, Yucca danica, Yucca flexilis.

* = Guarding against moisture during the winter months.

Adult example of Yucca elata.
Note the inflorescence (not in bloom) app.
4 m high similar to Yucca whipplei.

Yucca linearifolia in wintertime

Climate data

USA, Great Basin Desert, Hamlyn Valley, Utah, 1,800 m altitude

Temperatures:

July - August	32°C to 36°C
December - January	-18°C to -25°C
Extreme	39°C and -29°C

Precipitation: 300 mm p. a. ; mostly in Spring and early Summer.

Central Europe, central Germany, Mannheim, sea level

Temperatures:

July - August	28°C to 34°C
December - January	-8°C to -14°C
Extreme	41.5 °C (in 2003) and -18°C

Precipitation: 650 mm p. a. ; January - December irregularly

Yucca bacata ssp. vespertina in bloom
with the golden poppy (stateflower
of Califonia) Escholtzia parishii.M
Old Yucca elata in background.

Yucca pallida in foreground in bloom.

Alpine mini-garden in half shadow.
Alpine mini-garden with the Dwarf Yucca, Yucca nana.