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![Image of Hesperoyucca whipplei 'RBG' [Yucca]](https://www.smgrowers.com/imagedb/Hesperoyucca_whippleiRBG.jpg )
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| Category: Succulent |
| Family: Agavaceae (now Asparagaceae) |
| Origin: California (U.S.A.) |
| California Native (Plant List): Yes |
| Evergreen: Yes |
| Flower Color: Creamy White |
| Bloomtime: Spring/Summer |
| Synonyms: [Yucca whipplei] |
| Height: 2-3 feet |
| Width: 3-4 feet |
| Exposure: Full Sun |
| Summer Dry: Yes |
| Deer Tolerant: Yes |
| Irrigation (H2O Info): Low Water Needs |
| Winter Hardiness: 10-15° F |
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Hesperoyucca whipplei 'RBG [Yucca] (Our Lord's Candle) - A dense rosette-forming plant to 4 feet tall and 5 feet across with rigid, silver-gray leaves that are margined yellow or brown with a very sharp tip. In the mid-spring into summer, mature plants produce clusters of bell-shaped creamy-white flowers, sometimes tinged with purple, drooping on branched spikes. The blooms are fragrant. After blooming the plant will die, but it sometimes is replaced by numerous offsets (ssp. caespitosa). A large silver form was noted by Ruth Bancroft Garden curator Brian Kemble. Our plants are from seed off of this plant. This plant, long called Yucca whipplei, is now considered to actually be Hesperoyucca whipplei. The reasons as listed in the Illustrated Handbook of Succulent Plants: Monocotyledons edited by Urs Eggli (2001) are: Hesperoyucca differs clearly from Yucca in that it forms a definite bulb in the seedling stage (absent in Yucca but further study necessary), has a capitate stigma (6 lobed in Yucca), fruit is strictly loculicidally dehiscent (Yucca indehiscent or septicidal or septicidal and loculicidal), filaments basally attached to tepals and w/o apical thickening (Yucca has filaments not attached to tepals but held close to the ovary and bent outwards near the swollen apex), the often very large inflorescence of Hesperoyucca by far exceed the inflorescence size of Yucca and unbranched plants (ssp. whipplei) are monocarpic while branched plants (ssp. caespitosa) develop new rosettes from the leaf axils (both traits unknown in Yucca).
The information about Hesperoyucca whipplei 'RBG' [Yucca] displayed on this web page is based on our research conducted in the nursery's horticultural library and from reliable online resources. We also include observations made about it as it grows in our nursery gardens and other gardens we have visited, as well how the crops have performed in containers in our nursery field. We will also incorporate comments we receive from others and welcome hearing from anyone with additional information, particularly if they can share cultural information that would aid others in growing this plant. |
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