Twoleaf Watermilfoil
Myriophyllum heterophyllum
- Native to:
- Canada, Cuba, Guatemala, Mexico, Prince Edward I., United States
Robert H. Mohlenbrock. USDA NRCS.






Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Haloragaceae
- Genus:
- Myriophyllum
- Species:
- Myriophyllum heterophyllum
- USDA Symbol:
- MYHE2
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Aquatic
- Height:
- 100 cm
- Light Requirements:
- Full Sun
- Drought Tolerance:
- Low
- Bloom Months:
- jun,jul,aug,sep
- Bloom Colors:
- green, red
Garden & Ecology Notes
- Wildlife Value:
- waterfowl, fish
- Deer Resistant:
- Yes
Soil Requirements
- Soil Type:
- nutrient-rich, silty, submerged soil
- pH:
- 5.5 - 7.5 (slightly acidic to neutral)
- Drainage:
- tolerates poor drainage
- Moisture:
- consistently moist
- Notes:
- Commonly found in slow-moving or still waters
Propagation & Germination
- Notes:
- Primarily reproduces vegetatively through fragmentation; sexual reproduction via seed is uncommon.
The above propagation data sourced from Claude AI