Johnson's Seagrass
Halophila ovalis subsp. ovalis
- Native to:
- American Samoa, Andaman Is., Australia, Borneo, Caroline Is., China, Comoros, Egypt, Eritrea, Federated States of Micronesia, Fiji, Gulf States, Hainan, India, Iran, Japan, Jawa, Kenya, Kuwait, Lesser Sunda Is., Madagascar, Malaya, Maluku, Mauritius, Mozambique, Myanmar, Nansei-shoto, New Caledonia, New Guinea, Nicobar Is., Norfolk Is., Oman, Pakistan, Palestine, Philippines, Rodrigues, Samoa, Saudi Arabia, Seychelles, Society Is., Solomon Is., Somalia, South Africa, South China Sea, Sri Lanka, Sudan-South Sudan, Sulawesi, Taiwan, Tanzania, Thailand, Tonga, United States, Vietnam, Yemen
GBIF: James K. Wetterer
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Hydrocharitaceae
- Genus:
- Halophila
- Species:
- Halophila ovalis subsp. ovalis
- USDA Symbol:
- HAJO
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb
- Height:
- 10 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Low
Garden & Ecology Notes
- Wildlife Value:
- sea turtles, dugongs, fish
- Deer Resistant:
- Yes
- Salt Tolerant:
- Yes
Soil Requirements
- Soil Type:
- sandy, nutrient-poor, well-drained
- pH:
- 6.5 - 8.5 (neutral to slightly alkaline)
- Drainage:
- excellent drainage required
- Moisture:
- consistently moist
- Notes:
- Commonly found in shallow marine environments