Canadian waterweed
Elodea canadensis
USDA zones4 to 10
SunNeeds full sun (6+ hours)
WaterNeeds moist soil
Sizeup to 2.5 feet tall1 to 3 feet wide
- Habit
- Herb
- Bloom season
- Summer, autumn
- Bloom color
- White
- Foliage color
- Gray-green
- Soil pH
- Acid, alkaline, neutral
Notes
Canadian waterweed (Elodea canadensis) is a perennial for garden ponds and aquariums. It is hardy to USDA zone 4, or down to -30°F (-34°C). This plant likes full sun and moist soil. It oxygenates garden ponds and gives shelter to small fishes and aquatic invertebrates. It can become invasive if grown in rich soil, so keep it contained. White flowers appear in summer and autumn.
Pairs well with Reed grass and Great burnet.
Native range
AL, AR, AZ, CA, and 50 more places. See all 54
AL, AR, AZ, CA, CO, CT, DC, DE, FL, GA, IA, ID, IL, IN, KS, KY, MA, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, RI, SC, SD, TN, UT, VA, VT, WA, WI, WV, WY; AB, BC, MB, NB, NS, ON, QC, and SK.