Uniola Flatsedge
Cyperus unioloides
- Native to:
- Argentina, Australia, Bangladesh, Belize, Bolivia, Botswana, Brazil, Burkina, Cambodia, Central African Republic, China, Colombia, Costa Rica, Cuba, Dominican Republic, DR Congo, Eswatini, Ethiopia, Gambia, Guatemala, Guinea, Haiti, Honduras, India, Ivory Coast, Jamaica, Japan, Jawa, Lesotho, Madagascar, Malawi, Mali, Mexico, Mozambique, Myanmar, Nepal, New Guinea, Nigeria, Panamá, Paraguay, Peru, Philippines, Puerto Rico, Senegal, South Africa, Sudan-South Sudan, Sumatera, Suriname, Taiwan, Tanzania, Thailand, Uganda, United States, Uruguay, Vietnam, Zambia, Zimbabwe
iNaturalist: © jimw3 (iNaturalist #206682932)






Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Cyperaceae
- Genus:
- Cyperus
- Species:
- Cyperus unioloides
- USDA Symbol:
- CYUN3
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Graminoid
- Height:
- 90 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Low
- Bloom Months:
- jun,jul,aug,sep,oct
- Bloom Colors:
- green, brown
Garden & Ecology Notes
- Wildlife Value:
- waterfowl, shorebirds
- Deer Resistant:
- Yes
Soil Requirements
- Soil Type:
- rich, well-drained loamy soil
- pH:
- 5.5 - 7.0 (slightly acidic to neutral)
- Drainage:
- tolerates poor drainage
- Moisture:
- consistently moist
- Notes:
- prefers habitats like wetlands and marshes
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 14–30 days
- Notes:
- Seeds germinate best with consistent moisture and warm temperatures. Surface sow as light may aid germination.