Knotsheath Sedge

Carex retrorsa

Native to:
Canada, United States

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Cyperaceae
Genus:
Carex
Species:
Carex retrorsa
USDA Symbol:
CARE4

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Graminoid
Height:
100 cm
Light Requirements:
Part Shade,Shade
Drought Tolerance:
Low
Bloom Months:
may,jun,jul

Garden & Ecology Notes

Wildlife Value:
waterfowl, songbirds, wetland mammals
Deer Resistant:
Yes

Soil Requirements

Soil Type:
rich, moist, organic soil
pH:
5.5 - 7.0 (slightly acidic to neutral)
Drainage:
tolerates poor drainage
Moisture:
consistently moist
Notes:
commonly found in wetlands and marshy areas

Propagation & Germination

Stratification:
Cold/moist stratification required — 30–60 days
Germination Time:
14–45 days
Notes:
Seeds germinate best with light exposure on moist substrate. Erratic germination is common in sedges.

Pre-treatment: Seeds were cold stratified for 270 days

Source: npn.rngr.net