Coastal Ragweed
Ambrosia hispida
- Native to:
- Bahamas, Belize, Cayman Is., Cuba, Dominican Republic, Guyana, Haiti, Honduras, Jamaica, Leeward Is., Mexico, Puerto Rico, United States, Virgin Islands, Windward Is.
Krzysztof Ziarnek Kenraiz






Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Asteraceae
- Genus:
- Ambrosia
- Species:
- Ambrosia hispida
- USDA Symbol:
- AMHI3
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb , Subshrub
- Height:
- 100 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Low
- Bloom Months:
- jul,aug,sep
- Bloom Colors:
- green
Garden & Ecology Notes
- Wildlife Value:
- birds, small mammals
- Salt Tolerant:
- Yes
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 coastal areas and dunes.
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 14–30 days
- Notes:
- Seeds germinate best with light exposure and consistent moisture. May exhibit variable germination rates.
The above propagation data sourced from Claude AI