Claybank Beaksedge
Rhynchospora rugosa
- Native to:
- Argentina, Belize, Bolivia, Brazil, Caroline Is., Chile, Colombia, Costa Rica, Cuba, Dominican Republic, French Guiana, Galápagos, Guatemala, Guyana, Hawaii, Honduras, Jamaica, Leeward Is., Mexico, Nicaragua, Panamá, Paraguay, Peru, Puerto Rico, Suriname, Trinidad-Tobago, United States, Uruguay, Venezuelan Antilles, Windward Is.
Royal Botanic Gardens, Kew





Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Cyperaceae
- Genus:
- Rhynchospora
- Species:
- Rhynchospora rugosa
- USDA Symbol:
- RHRU3
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Graminoid
- Height:
- 100 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Low
- Bloom Months:
- jun,jul,aug,sep,oct
- Bloom Colors:
- white, brown
Garden & Ecology Notes
- Wildlife Value:
- birds, waterfowl
- Deer Resistant:
- Yes
- Fire Ecology:
- Fire adapted — tolerates or benefits from fire
- Fire Notes:
- Resprouts from rhizomes after fire; commonly found in fire-maintained wet pine savannas and flatwoods.
Soil Requirements
- Soil Type:
- acidic, nutrient-poor, sandy or peaty soil
- pH:
- 4.5 - 6.5 (acidic to slightly acidic)
- Drainage:
- tolerates poor drainage
- Moisture:
- consistently moist
- Notes:
- commonly found in wetlands and bogs
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 14–60 days
- Notes:
- Seeds germinate best with consistent moisture and may require light for optimal germination.