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Plant profile · Austin & Hill Country
Sampson's Snakeroot (Orbexilum pedunculatum)
(c) Michelle W. (鍾偉瑋), some rights reserved (CC BY) · iNaturalist

Sampson's Snakeroot

Orbexilum pedunculatum

Also called Mountain Pea

Hills guide picknative · Central Texas

Sampson's Snakeroot is a groundcover native to Central Texas that grows 0.7–1 ft tall and 2–3 ft wide. It wants full sun or part shade and low water. Blooms purple in Jun–Aug.

Will it grow in your yard?

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From our guide

Village of the Hills

Slender perennial with three-part leaves and small lavender pea flowers on upright stems.

Why it works here

Quiet native for a naturalistic planting; nitrogen fixer and pollinator forage.

Watch out

Subtle to the point of easy to overlook. Slow to establish.

The facts

6 sources
Type
Groundcover
Sun
Full sun to part shade (3+ hrs)
Water
Low
Height
0.7–1 ft
Spread
2–3 ft
Bloom
Jun–Aug · purple
Foliage
Semi-evergreen
Deer
Low — deer eat it; cage or plant where they cannot reach. Legume foliage is preferred browse.
Size, sun, water and foliage from the Village of the Hills guide; the rest resolved across sources.

Where it grows

2 occurrence records in Central Texas (GBIF).

Can you buy it?

In the Village of the Hills guide, but not on the grower stock lists we read yet. Ask a native-plant nursery.