Knieskern's Beaksedge ⚠️ Threatened
Rhynchospora knieskernii
- Native to:
- United States
Unknown author Unknown author





Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Cyperaceae
- Genus:
- Rhynchospora
- Species:
- Rhynchospora knieskernii
- USDA Symbol:
- RHKN
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Graminoid
- Height:
- 100 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Low
- Bloom Months:
- jul,aug,sep
- Bloom Colors:
- white
Garden & Ecology Notes
- Wildlife Value:
- birds
- Fire Ecology:
- Fire adapted — tolerates or benefits from fire
- Fire Notes:
- Occurs in fire-maintained pine barrens; benefits from periodic fire to reduce competition and maintain open, wet sandy/peaty habitat.
Soil Requirements
- Soil Type:
- sandy, acidic, nutrient-poor soil
- pH:
- 4.5 - 6.0 (acidic to slightly acidic)
- Drainage:
- excellent drainage required
- Moisture:
- consistently moist
- Notes:
- Typically found in open, sandy wetlands
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 60–90 days
- Germination Time:
- 30–60 days
- Notes:
- Seeds benefit from cold, moist stratification for 60-90 days; germination occurs in spring under warm, moist conditions.