Carex bromoides
Common Name(s):
- Phonetic Spelling
- KAY-reks bro-MOY-deez
- Description
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Common brome sedge is an herbaceous perennial in the sedge family (Cyperaceae). It is native to a large portion of eastern North America from New Brunswick west to Minnesota and south to Florida and Texas. The species epithet means "like Bromus [a genus of grass]."
This sedge requires moist to wet soils, some organic matter, and does best in partial shade. It will tolerate shallow, standing water for a short amount of time. It can tolerate more sun exposure if soils stay moist, but it does not do well in clay soils. In natural settings, it occurs in various wetlands, including bogs, swamp forests, and seepages, often in basic soils. Within NC, it is most frequent in the Mountains. This is an ideal plant for rain gardens and pond edges. It provides benefits like other wetland plants, including bank stabilization and water filtration. Like other native sedges, it is ecologically important and utilized by a variety of animals.
Common brome sedge forms dense tufts of culms with narrow basal leaves. It can spread by underground rhizomes. It does not spread by runners, but forms single clumps which expand slowly in size. Mature clumps take on a gently arching habit, and can grow to 1 foot in height with a 20 inch spread. The inflorescence is rather narrow and located at the summit of each culm. It consists of 3-8 spikelets, each consisting of 6-18 female florets. Male florets, when present, are below the female florets on the spikelet. Two subspecies are recognized: ssp. bromoides is widespread, while ssp. montana is restricted to the southern Blue Ridge Mountains. The latter differs in having wider culms, wider leaf blades, and a more dense habit, among other subtle differences.
Diseases, Insect Pests, and Other Plant Problems:
No known diseases or insect pests.
- See this plant in the following landscape:
- Cultivars / Varieties:
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- Cultivars / Varieties:
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- Tags:
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Attributes:
- Genus:
- Carex
- Species:
- bromoides
- Family:
- Cyperaceae
- Life Cycle:
- Perennial
- Recommended Propagation Strategy:
- Division
- Seed
- Country Or Region Of Origin:
- eastern U.S. and southeastern Canada
- Distribution:
- Widespread in eastern North America from Canada to Mexico.
- Wildlife Value:
- Carex sedges are extremely valuable to animals in many NC ecosystems. They provide cover for many small animals. The foliage is eaten by mammals as well as Lepidoptera, particularly skippers [Hesperiidae] and satyrs [Nymphalidae: Satyrinae]. Birds and small mammals eat the seeds and use the foliage in nest-building.
- Dimensions:
- Height: 0 ft. 9 in. - 3 ft. 0 in.
- Width: 1 ft. 4 in. - 1 ft. 9 in.
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Whole Plant Traits:
- Plant Type:
- Ground Cover
- Herbaceous Perennial
- Native Plant
- Ornamental Grasses and Sedges
- Habit/Form:
- Clumping
- Mounding
- Spreading
- Growth Rate:
- Rapid
- Maintenance:
- Low
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Cultural Conditions:
- Light:
- Dappled Sunlight (Shade through upper canopy all day)
- Partial Shade (Direct sunlight only part of the day, 2-6 hours)
- Soil Texture:
- High Organic Matter
- Loam (Silt)
- Soil pH:
- Alkaline (>8.0)
- Neutral (6.0-8.0)
- Soil Drainage:
- Moist
- Occasionally Wet
- NC Region:
- Coastal
- Mountains
- Piedmont
- USDA Plant Hardiness Zone:
- 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b
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Fruit:
- Fruit Color:
- Brown/Copper
- Green
- Fruit Type:
- Achene
- Fruit Length:
- < 1 inch
- Fruit Width:
- < 1 inch
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Flowers:
- Flower Color:
- Brown/Copper
- Green
- Flower Inflorescence:
- Raceme
- Spike
- Flower Bloom Time:
- Spring
- Summer
- Flower Petals:
- Bracts
- Flower Size:
- < 1 inch
- Flower Description:
- Pistillate flower contained in a perigynium, a pouch-like bract typical of Carex. Green and light brown blooms from May into July. Three to eight spikelets contain both male and female flowers. The inflorecences mature from light green to tan over the course of the growing season.
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Leaves:
- Leaf Color:
- Green
- Leaf Feel:
- Smooth
- Leaf Value To Gardener:
- Long-lasting
- Leaf Type:
- Sheath
- Leaf Arrangement:
- Alternate
- Leaf Shape:
- Linear
- Hairs Present:
- No
- Leaf Length:
- > 6 inches
- Leaf Width:
- < 1 inch
- Leaf Description:
- The ascending to spreading leaf blades are 1/10th of an inch across and 3 to 9 inches long. They are glabrous on the surfaces but rough at the margin.
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Stem:
- Stem Color:
- Green
- Stem Is Aromatic:
- No
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Landscape:
- Landscape Location:
- Lawn
- Naturalized Area
- Pond
- Woodland
- Landscape Theme:
- Rain Garden
- Attracts:
- Butterflies
- Small Mammals
- Songbirds
