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For successful seedlings,
see the growing notes at the bottom of the page!
Switchgrass (Panicum virgatum), also known as old switch panicgrass, is a tall, native North American perennial grass that can reach up to 1.75 metres in height. This adaptable grass thrives in various soil types and is especially valued for its deep root system, which helps stabilize riverbanks and slopes. In gardens, its roots contribute to soil aeration and increase fertility. Its straight, sturdy stems are topped with airy, golden blooms that persist through winter, adding structure and visual interest to landscapes even in the colder months. Switchgrass is thus an excellent choice for naturalistic gardens and soil stabilization projects in Quebec.
Medicinal and Culinary Uses
Switchgrass has no documented medicinal uses. However, it has traditionally been used as animal forage due to its high nutritional value.
Ecological Roles
Switchgrass plays an essential ecological role by enhancing soil structure and fertility with its deep roots, which help prevent erosion on banks and slopes. This grass attracts various insects, and in winter, its upright stems provide shelter for small wildlife and insects, contributing to local biodiversity. By integrating switchgrass into ecological gardens and riparian zones, we support soil health while creating resilient habitats for local wildlife.
Switchgrass seeds require cold stratification to ensure germination. See the cultivation notes below for more details.
Akène cannot assume any responsibility for the use of plants for therapeutic purposes. Always seek advice from a professional before using a medicinal or edible plant.
Sowing and Growing
Technical Details
Seeds per packet: 200
Family: Poaceae
Scientific name: Panicum virgatum
Life cycle: Perennial
Hardiness zone: 3
Soil type: Sandy to silty
Soil moisture level: Dry to medium
Soil - additional attributes: Well-drained
Light: Sun
Blooming: July to October
Spacing: 100 cm
Height: 175 cm
Deer resistance: High
Stratification: 30 days
Scarification: No
Germination time: 15 to 20 days
Sowing depth: 3 mm