Manyspike Flatsedge
Cyperus polystachyos
- Native to:
- Algeria, Andaman Is., Angola, Argentina, Ascension, Australia, Bahamas, Bangladesh, Belize, Benin, Bermuda, Bismarck Archipelago, Bolivia, Borneo, Botswana, Brazil, Burkina, Burundi, Cambodia, Canary Is., Cape Verde, Caroline Is., Cayman Is., Central African Republic, Chad, China, Cocos (Keeling) Is., Colombia, Comoros, Congo, Costa Rica, Cuba, Dominican Republic, DR Congo, Easter Is., Ecuador, Egypt, El Salvador, Equatorial Guinea, Eritrea, Eswatini, Federated States of Micronesia, French Guiana, Gabon, Galápagos, Gambia, Ghana, Guam, Guatemala, Guinea, Guinea-Bissau, Gulf of Guinea Is., Guyana, Hainan, Hawaii, Honduras, India, Iraq, Italy, Ivory Coast, Jamaica, Japan, Jawa, Kazan-retto, Kenya, Korea, Laccadive Is., Laos, Leeward Is., Lesser Sunda Is., Liberia, Libya, Line Is., Madagascar, Malawi, Malaya, Maldives, Mali, Maluku, Marianas, Marquesas, Mauritania, Mauritius, Mexico, Morocco, Mozambique, Myanmar, Namibia, Nansei-shoto, New Guinea, Nicaragua, Nicobar Is., Niger, Nigeria, Northern Mariana Islands
iNaturalist: © yolandeyoung (iNaturalist #273872810)






Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Cyperaceae
- Genus:
- Cyperus
- Species:
- Cyperus polystachyos
- USDA Symbol:
- CYPO
Growth Characteristics
- Life Cycle:
- Annual | Perennial
- Growth Habit:
- Graminoid
- Height:
- 90 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Low
- Bloom Months:
- jun,jul,aug,sep,oct
- Bloom Colors:
- greenish-brown
Garden & Ecology Notes
- Wildlife Value:
- birds
- Salt Tolerant:
- Yes
Soil Requirements
- Soil Type:
- moist, fertile, well-drained soil
- pH:
- 5.0 - 7.5 (slightly acidic to neutral)
- Drainage:
- tolerates poor drainage
- Moisture:
- consistently moist
- Notes:
- commonly found in wetlands and marshy areas
Propagation & Germination
Pre-treatment: Seeds are soaked overnight in water. Seeds should be cleaned before they are sown.
Establishment: Indigenous to Hawai'i. Native to tropical and subtropical regions worldwide. Common on open or grassy, often disturbed areas, from mesic coastal sites to mesic and wet forest, 0-1,420 m, on Midway Atoll and documented from all the main islands except Kaho'olawe.
Source: npn.rngr.net