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Sampson’s Snakeroot

Orbexilum pendunculatum

Legume; tolerates variety of shade & soils; psoraleae bee collects pollen only from this genus & Psoralidium



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Orbexilum pendunculatum, commonly called Sampson’s Snakeroot, is a perennial legume. The blooming period occurs from early to mid-summer.

Wildlife notes

In general, very little is known about floral-faunal relationships for this species. The flowers are pollinated primarily by bees, which seek nectar and pollen.

Forage notes

No information available at this time. Please let us know if you have any personal experience with this plant!

Landscaping notes

Sampson’s Snakeroot prefers full or partial sun, mesic to dry conditions, and an acidic soil that is sandy or rocky.

Restoration notes

Habitats include mesic to dry prairies, sand prairies, sandstone glades, rocky upland woodlands, savannas, and thinly wooded bluffs. This wildflower benefits from occasional disturbance that reduces the encroachment of woody vegetation. Sampson’s Snakeroot can be used as a ground cover and for erosion control.

This plant is commonly used in the following mixes: Shadows & Sunbeams, Prairie Patchwork Mix


Videos About This Plant

To learn more about this plant, check out our videos about it and its uses.

Prairie Patchwork Mix

Additional information

Weight N/A

Packet, Ounce, Pound


Full Sun to Part Shade

Seeding Rate

14 bulk lbs/acre


Average, Moist



Bloom Month

May, Jun



Specialty Uses


# seeds/pkt


Packet coverage area

5 sq. ft

Life Cycle


What is PLS?

Pure Live Seed (PLS) is the portion of good viable seed per pound. It is a measure of the seed that is alive and able to sprout into plants. This product is sold by PLS ounce/pound. To provide one ounce/pound of viable seed, you will receive more than one ounce/pound of product. Read more about PLS here.