Switchgrass (Panicum virgatum) | Prairie Restorations

Switchgrass

Panicum virgatum

Switchgrass is a warm-season perennial grass that grows 3 to 6 feet tall, forming dense clumps. It is found in prairies, savannas, and along roadsides, thriving in a variety of soils, including sandy and clay-rich ones. Its deep root system helps prevent erosion, making it valuable for restoration projects. Switchgrass is very versatile in native landscaping projects due to its adaptability to different soil types and conditions. It turns a striking golden hue in the fall and provides winter interest.

Characteristics

Product Form	Plant, Seed
Type	Graminoid
Sun	Full Sun, Partial Sun
Soil	Clay, Loam, Sand/Gravel, Calcareous
Moisture	Dry, Mesic, Wet
Average Max Height (inches)	40
Suggested Plant Spacing (inches)	36
Dominance	High

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.