Panicum virgatum

Panicum virgatum: Deep-Rooted Prairie Original

The original switch grass, native and deep-rooted, and frankly a little tired of all the fancy cultivars getting the credit. Pink-tinted plumes, golden fall colour, seeds for the birds. RESPECT YOUR ELDERS.

Plant Characteristics:

• Botanical Name: Panicum virgatum
• Common Name: Switch Grass
• Height: 90–150 cm (3–5 ft) in flower
• Spread: 60 cm (2 ft)
• Flowers: Airy, open panicles with a pink to purple tint, ripening to cream and golden-brown seed heads
• Bloom Time: Late summer into fall (August to October)
• Foliage: Narrow green to blue-green blades that turn yellow to bronze in fall and beige in winter
• Features: Deep roots for erosion control, seeds for birds

Where to Plant: Straight species switch grass is a workhorse for naturalized areas, meadows, pollinator gardens and rain gardens, and its deep roots help hold soil on slopes and banks. It handles clay, sand, periodic flooding and some road salt, which makes it practical along ditches and driveways.

Companion Plants: Plant switchgrass as the backbone of a sunny native prairie bed in dry to average soil. Allium schoenoprasum adds lavender chive flowers at 30 cm in May and June. Coreopsis lanceolata brings golden daisies at 30 to 60 cm from May to July. Verbena stricta adds lavender-purple spikes at 60 to 100 cm from June to September. Liatris spicata brings purple spikes at 90 to 120 cm from July to September.

Plant Care: Plant in full sun in almost any soil. It prefers average moisture but adapts to dry or occasionally wet ground. Skip the fertilizer, because rich soil makes it floppy. Water through the first season while the roots grow down. Leave the clump standing for winter interest and bird food. Cut back to about 10 cm (4 in) in early spring, before new growth begins. As a warm-season grass, it doesn't really get going until the soil warms in late spring. Divide in spring every few years. It can self-seed in open soil, so remove unwanted seedlings while they're small.

History: Switch grass is native from southern Canada to Mexico across most of North America east of the Rockies, including southern Ontario and Quebec, and was one of the main grasses of the tallgrass prairie. Today it's also used for erosion control, wildlife habitat and prairie restoration.

Final Thoughts: Roots go down so deep they practically hold the hill together. Plant it on the slope your lawn mower fears. THE BIRDS WILL SEND A THANK-YOU CARD.