Drummond's Clematis, Old Man Beard
Scientific Name: Clematis drummondii Torr. & Gray
Family: Ranunculaceae
Clematis drummondii, photo by Clarence A. Rechenthin. Courtesy of USDA NRCS Texas State Office
USDA: 8-10
Heat Tolerance: very high
Sun Exposure: Full sun to part shade
Origin: Sonoran Desert, Chihuahuan Desert: USA (Southwestern Oklahoma, western Texas, New Mexico, Arizona), Mexico, in dry washes and canyons
Growth Habits: Climbing deciduous semi-woody vine, up to 25 feet long (7.5 m); glabrous to pubescent stems; pinnately compound leaves with 5 to 7 leaflets variable in shape and size but in general lance-shaped, margins with coarse teeth, up to 1.4 to 3.2 inches long (3.5-8 cm), 0.4 to 2 inches wide (1-5 cm).
Watering Needs: Little water, needs good drainage
The species epithet is named after the Scottish explorer Thomas Drummond.
Blooming Habits:
The Texas Virgin's Flower is dioecious. It bears white to cream-colored flowers, paniculate and usually numerous, about 2 cm (0.8 in) across, in spring and summer.
Fruiting Habits:
The female plants bear the fruits: achenes with very showy persistent plumose styles, 4-8 cm (1.6-3.1 in) long
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