Prefers saturated soils in fens and water levels to a depth of 3 feet in
marsh areas. Species tolerates semi-permanently flooded conditions.
Wildlife Value
Waterfowl and shorebirds eat achenes. Muskrats and geese eat rhizomes and stems.
Provides preferred nesting habitat for redhead and canvasback ducks. Also
provides spawning and nursery habitat for northern pike and other fish species.
Application/Zone
Used in lower shoreline zones and in vegetated swales. Resists wave action and
water level changes.
Availability, Establishment, and Maintenance
Achenes, rootstocks, rhizomes, and transplants are available from commercial
vendors.
Achenes do not germinate readily unless they are stratified under cold, wet
conditions for several months and then exposed to light and warm temperatures.
Fresh collected achenes can be planted in the fall in wet mudflats after
drawdown for spring germination.
Spring planting of rootstocks and rhizomes is preferred due to greater
success. Rhizomes are planted at a depth of 2-5 inches in saturated substrate
and at a depth of 4-6 inches in water. Rhizomes should be placed 3 feet apart in
a clustered arrangement.
Hardstem Bulrush is a rather slow spreading plant when propagating from
rhizomes. It may take up to 3 years to develop into a thick stand.
Hardstem Bulrush Scirpus acutus
Mature Height
3.5-9.3 feet
Plant Type
Perennial emergent herb
Indicator Status
Obligate
pH
6.7-9.1
Nutrient Load Tolerance
Low to moderate
Salt Tolerance
Moderate to high
Siltation Tolerance
Low to moderate
Flowering Color and Time
Reddish brown
May to September
