American Water-willow (Americana)

The American Water-willow (Americana) 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 American Water-willow (Americana) has dark green foliage and inconspicuous white flowers, with a moderate amount of conspicuous brown fruits or seeds. The greatest bloom is usually observed in the late spring, with fruit and seed production starting in the spring and continuing until fall. Leaves are not retained year to year. At maturity, the typical American Water-willow (Americana) will reach up to 2.5 feet high, with a maximum height at 20 years of 0 inches.

The American Water-willow (Americana) is easily found in nurseries, garden stores and other plant dealers and distributors. It can be propagated by bare root. It has a moderate 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 -28°F. has low tolerance to drought and restricted water conditions.

Plant Basics
Growth Rate Rapid
General Type Forb/herb
Growth Period Spring
Growth Duration Perennial
Plant Nativity Native to U.S.
Commercial Availability Routinely Available
Physical Characteristics
Bloom Period Late Spring
Displays Fall Colors No
Shape/Growth Form Rhizomatous
Drought Tolerance Low
Shade Tolerance Tolerant
Height When Mature 2.5
Vegetative Spread Rapid
Flower Color White
Flower Conspicuousness Yes
Fruit/Seed Abundance Medium
Fruit/Seed Seasonality Spring Fall
Seed Spread Rate Moderate
Gardening Characteristics
Propagations (Ways to Grow) Bare Root
Moisture Requirements Medium
Cold Stratification Required No
Minimum Temperature -28
Soil Depth for Roots 10
Toxic to Nearby Plants No
Toxic to Livestock No
After-Harvest Resprout Ability No
Responds to Coppicing No
Growth Requirements
pH Range 5.4–7.6 pH
Precipitation Range 35–35 inches/yr
Planting Density 3450–10912 indiv./acre
Soil Textures Coarse, Fine, Medium
Soil Depth for Roots 10
Minimum Frost-Free Days 140 day(s)
Salinity Tolerance None
CaCO3 Tolerance Medium
Sustainability & Use
Leaf Retention No
Palatability Medium
Fire Resistant No

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