Scirpus cyperinus
Wool Grass
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Wool Grass can be found throughout much of the US and Canada in wet locations such as marshes, meadows and swamps. From July to September, numerous little spikelets appear to be covered with wool-like hair, hence its common name. Other common names include Cottongrass Bulrush and Marsh Bulrush. Wool Grass grows readily in wet soil, full sun or light shade. It is quite adaptable to regular garden soil and tolerates occasional dry stretches. According to the Lady Bird Johnson Wildflower Center, it’s “good for erosion control when planted en masse. Bulrush forms a buffer against wind and wave action, thus permitting other aquatic plants to grow in an otherwise unfavorable environment.”
In the past, native people wove mats and made ropes with its stems and stuffed its cushiony seed heads into pillows. Wool Grass creates a natural look when planted near water features and ponds. It provides food and cover for birds and other wildlife and is often called for in restoration projects. Although people call it a grass, it is actually a sedge, part of the Cyperaceae family.
Zone
4-9
Growth Cycle
Cool
Features
- Native to North America
- Thrives in wet areas
- Bioretention/Rain Gardens
- Bioswales/Vegetated swales
- Erosion control
GROWER INFO & TIPS
- Growth rate: medium
- Grow in 1 or 2 gallon
- Grow in well-drained soil
- Water needs: keep evenly moist-wet, but do not overwater
- Fertilizing: use a slow release, medium-rate fertilizer
- Possible pests: none known
- Overwintering: cold frame with clear poly, no special requirements
*Note: please adapt these suggestions as needed to accommodate your local conditions.
LANDSCAPING INFO
- A natural for wetland restorations and water retention ponds
- Creates interest when planted near ponds and water features
- Tolerates occasional dry conditions
- Provides shelter, food, and nesting materials for birds and wildlife
- Perfect for wet meadows, ditches, ponds, and bogs
- Lives in moist, wet or inundated soil
