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Flaigg, Norman G.
Yucca thompsoniana Trel.
Thompson's yucca, Thompson Yucca, Beaked yucca
Synonyms: Yucca rostrata
USDA Symbol: YUTH
USDA Native Status: Native to U.S.
Thompson’s yucca grows 6–12 feet high, treelike, with a trunk 5–8 inches in diameter. The trunk is usually unbranched. The leaves are narrow and stiff and grow in a radiating mass near the top; they are 8–24 inches long and about 1/2 inch wide in the middle. They gradually widen from the base to the middle, then narrow to a needlelike spine at the tip. The margins are horny, pale yellow, and more or less fine-toothed. The stout, 2-3 ft. flowering stalk holds a dense panicle of white flowers slightly above the foliage.
Beaked yucca, Yucca thompsoniana (formerly Y. rostrata), gets its common name from the shape of its fruit. It. Many yuccas get unkempt, with shaggy, brown leaves hanging down; Thompson Yucca stays neat. It will adapt to any soil and reflected heat.
Bloom InformationBloom Color: White
Bloom Time: Apr , May
TX Native Distribution:
Trans-Pecos, TX & n. Mex. Native Habitat:
Dry, exposed, rocky slopes USDA Native Status: L48(N)
Growing ConditionsLight Requirement: Sun
Soil Moisture: Dry
Cold Tolerant: yes
Soil Description: Rocky soils.
Conditions Comments: Many yuccas get unkempt, with shaggy, brown leaves hanging down; Thompson yucca stays better looking than that. It will adapt to any soil and reflected heat.
BenefitConspicuous Flowers: yes
Interesting Foliage: yes
Yuccas will germinate promptly from fresh seed held over winter. Seeds germinate best in 60-70 degree temperatures. Yuccas may also be grown from rhizomes, stem
cuttings, or by digging offsets from the side of established plants. Transplant into a well Seed Collection:
Gather capsules as they begin to dry but before they split. Allow to dry, then crush to remove seeds. Overwinter, keep seeds in moist sand in the refrigerator. For longer storage periods, keep in sealed, refrigerated containers. Seed Treatment:
Not Available Commercially Avail:
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is either on display or available from the following:
NPSOT - Austin Chapter
- Austin, TX
Wildflower Center Seed BankLBJWC-1074
Collected 2011-07-06 in Brewster County by Lady Bird Johnson Wildflower Center
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Record Modified: 2013-05-23
Research By: TWC Staff