Old World Flatsedge
Cyperus cyperinus
- Native to:
- Australia, Bangladesh, Borneo, Caroline Is., China, Christmas I., Cocos (Keeling) Is., Cook Is., Easter Is., Fiji, Guam, Hainan, India, Jawa, Lesser Sunda Is., Malaya, Maluku, Marianas, Marquesas, Myanmar, Nansei-shoto, Nepal, New Caledonia, New Guinea, Nicobar Is., Ogasawara-shoto, Palau, Philippines, Samoa, Seychelles, Society Is., Sri Lanka, Sulawesi, Sumatera, Taiwan, Thailand, Tonga, Tuamotu, Tubuai Is., United States, Vanuatu, Vietnam, Wallis-Futuna Is., Yemen
iNaturalist: © wenlingtsai (iNaturalist #85698163)
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Cyperaceae
- Genus:
- Cyperus
- Species:
- Cyperus cyperinus
- USDA Symbol:
- CYCY
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Graminoid
- Height:
- 90 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Low
- Bloom Months:
- jul,aug,sep,oct
- Bloom Colors:
- brown
Garden & Ecology Notes
- Wildlife Value:
- waterfowl, songbirds
- Deer Resistant:
- Yes
Soil Requirements
- Soil Type:
- moist, nutrient-rich, organic soil
- pH:
- 5.5 - 7.0 (slightly acidic to neutral)
- Drainage:
- tolerates poor drainage
- Moisture:
- consistently moist
- Notes:
- commonly found in wetlands and marshes
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 14–30 days
- Notes:
- Seeds require consistent moisture and light for germination.