Leadplant (Amorpha canescens) | Prairie Restorations

Leadplant

Amorpha canescens

Amorpha canescens, commonly known as Leadplant, is a deciduous shrub that typically grows in clumps at 1 to 3 feet tall. It features gray-green, pinnately compound leaves and produces dense spikes of small, purple flowers with orange stamens from June to August. Leadplant is commonly found in prairies, savannas, and open woodlands, thriving in well-drained sandy or loamy soils. Historically, Indigenous peoples used Leadplant for medicinal purposes, including treating rheumatism and open wounds. In landscaping, it is valued for its drought tolerance, nitrogen-fixing ability, and attractiveness to pollinators, making it suitable for prairie restorations and native plant gardens.

Characteristics

Product Form	Plant, Seed
Type	Forb
Sun	Full Sun, Partial Sun
Soil	Clay, Loam, Sand/Gravel, Calcareous
Moisture	Dry, Mesic
Average Max Height (inches)	36
Suggested Plant Spacing (inches)	30
Bloom month(s)	June, July, August
Bloom Color or Type	Violet
Dominance	Medium

Range Maps

Sowing Information

Sow seed onto a firm, weed-free seedbed. Hand-broadcast seed making two perpendicular passes for even coverage. If planting a mix, broadcast the grass component first and lightly rake/drag it into the top 1/8–1/4" of soil. Next, broadcast wildflower/forb seed and press it into the soil surface (with a roller/cultipacker or the back of a rake) to ensure good seed-to-soil contact. After seeding, apply a very light layer of clean, seed-free straw (or other weed-free, site-appropriate mulch) to reduce erosion and retain moisture without smothering seedlings. A good rainfall or thorough watering will help settle seed and mulch and improve germination.

Planting Information

Dig a hole in your planting site slightly larger than the plant’s root system. When placing the plant into the hole, ensure that the soil line remains consistent with its original level in the pot. Fill in around the roots with the excavated soil, gently firming it to eliminate air pockets. Water the plant thoroughly the same day to promote successful establishment.