Canadian Waterweed (Canadensis)

The Canadian Waterweed (Canadensis) is generally described as a perennial forb/herb. This is native to the U.S. (United States) has its most active growth period in the spring . The greatest bloom is usually observed in the summer, with fruit and seed production starting in the summer and continuing until fall. Leaves are not retained year to year. The Canadian Waterweed (Canadensis) has a long life span relative to most other plant species and a rapid growth rate.

The Canadian Waterweed (Canadensis) is easily found in nurseries, garden stores and other plant dealers and distributors. It can be propagated by seed, sprigs. It has a slow ability to spread through seed production and the seedlings have high vigor. Note that cold stratification is not required for seed germination and the plant cannot survive exposure to temperatures below -33°F. has none tolerance to drought and restricted water conditions.

Plant Basics
Growth Rate Rapid
General Type Forb/herb
Growth Period Spring
Growth Duration Perennial
Lifespan Long
Plant Nativity Native to U.S.
Commercial Availability Routinely Available
Physical Characteristics
Bloom Period Summer
Displays Fall Colors No
Shape/Growth Form Multiple Stem
Drought Tolerance None
Shade Tolerance Intolerant
Vegetative Spread Rapid
Flower Color White
Flower Conspicuousness No
Fruit/Seed Abundance Low
Fruit/Seed Seasonality Summer Fall
Seed Spread Rate Slow
Gardening Characteristics
Propagations (Ways to Grow) Seed, Sprigs
Moisture Requirements High
Cold Stratification Required No
Minimum Temperature -33
Toxic to Nearby Plants No
Toxic to Livestock No
After-Harvest Regrowth Rate Slow
After-Harvest Resprout Ability No
Responds to Coppicing No
Growth Requirements
pH Range 6.9–7 pH
Precipitation Range 12–12 inches/yr
Planting Density 11000–19000 indiv./acre
Soil Textures Fine
Minimum Frost-Free Days 160 day(s)
Salinity Tolerance None
CaCO3 Tolerance High
Sustainability & Use
Leaf Retention No
Fire Resistant Yes
Causes Livestock Bloating None

Source: USDA, NRCS, PLANTS Database,
National Plant Data Center, Baton Rouge, LA 70874-4490 USA