Star Grass, Star Rush, White Topped Sedge

Rhynchosporacolorata

Family
Cyperaceae (sy-peer-AY-see-ee)
Genus
Rhynchospora (RIN-koh-SPOR-uh)
Species
colorata (kol-oh-RAY-tuh)
Synonym
Dichromena colorata
Sun Exposure
Sun to Partial Shade
Foliage
Herbaceous
Height
24-36 in. (60-90 cm)
Spacing
36-48 in. (90-120 cm)
Hardiness
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
Danger
N/A
Bloom Color
White/Near White
Bloom Time
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Mid Fall
Blooms all year
Other Details
Category
Ponds and Aquatics
Water Requirements
Very high moisture needs; suitable for bogs and water gardens
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
4.6 to 5.0 (highly acidic)
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Patent Information
Propagation Methods
By dividing the rootball
By dividing rhizomes, tubers, corms or bulbs (including offsets)
Seed Collecting
Collect seedhead/pod when flowers fade; allow to dry
Regional

This plant is said to grow outdoors in the following regions:

Clayton, California

Vista, California

Fort Lauderdale, Florida

Key West, Florida

Lutz, Florida

Orlando, Florida

Pompano Beach, Florida

Sarasota, Florida

Evans, Georgia

Harrisburg, North Carolina

Houston, Texas

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Gardener's Notes:

2
positives
0
neutral
0
negative
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K
Coral Springs, FL (Zone 10b) | May 2010 | positive

Growing on my canal bank this year. So far it doesn't seem like it will be invasive, staying close to the bank.

N
Boca Raton, FL (Zone 10a) | March 2005 | positive

White-tops, Star-rush, or White-topped Sedge is native to wet habitats, moist or wet fields, marshes, meadows, and swampsides and open, m...Read More

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