Sixweeks Threeawn
Aristida adscensionis
Also known as: Swartz's Threeawn
- Native to:
- Afghanistan, Algeria, Andaman Is., Angola, Argentina, Aruba, Ascension, Bahamas, Bangladesh, Benin, Bolivia, Botswana, Brazil, Burkina, Burundi, Cameroon, Canary Is., Cape Verde, Chad, Chile, China, Colombia, Cuba, Cyprus, Djibouti, Dominican Republic, DR Congo, East Aegean Is., Ecuador, Egypt, El Salvador, Eritrea, Eswatini, Ethiopia, Galápagos, Ghana, Greece, Guam, Guatemala, Gulf of Guinea Is., Gulf States, Haiti, Honduras, India, Iran, Iraq, Italy, Ivory Coast, Jamaica, Kazakhstan, Kenya, Kirgizstan, Kriti, Lebanon-Syria, Leeward Is., Lesotho, Lesser Sunda Is., Libya, Madeira, Malawi, Mali, Mauritania, Mexican Pacific Is., Mexico, Morocco, Mozambique, Myanmar, Namibia, Nepal, Netherlands Antilles, New Guinea, Nicaragua, Nicobar Is., Niger, Nigeria, North Caucasus, Oman, Pakistan, Palestine, Paraguay, Peru, Puerto Rico, Rwanda, Saudi Arabia, Senegal, Seychelles, Sicilia, Sinai, Socotra, Somalia, South Africa, Spain, Sri Lanka, Sudan-South Sudan, Tadzhikistan, Tanzania, Thailand, Togo, Transcaucasus, Tunis
Anthony Valois and the National Park Service





Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Poaceae
- Genus:
- Aristida
- Species:
- Aristida adscensionis
- USDA Symbol:
- ARAD
Growth Characteristics
- Life Cycle:
- Annual
- Growth Habit:
- Graminoid
- Height:
- 80 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- High
Garden & Ecology Notes
- Wildlife Value:
- birds
- Deer Resistant:
- Yes
- Salt Tolerant:
- Yes
- Fire Ecology:
- Fire adapted — tolerates or benefits from fire
- Fire Notes:
- Common in post-fire environments; seeds germinate readily after fire.
Soil Requirements
- Soil Type:
- sandy, well-drained, nutrient-poor soil
- pH:
- 6.0 - 8.0 (neutral to slightly alkaline)
- Drainage:
- excellent drainage required
- Moisture:
- dry to moderate
- Notes:
- commonly found in arid and semi-arid regions
Propagation & Germination
Pre-treatment: None required
Source: npn.rngr.net