Dotted Smartweed (Punctatum)

The Dotted Smartweed (Punctatum) 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 summer . The Dotted Smartweed (Punctatum) has green foliage and inconspicuous white flowers, with a moderate amount of conspicuous black fruits or seeds. 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 Dotted Smartweed (Punctatum) has a short life span relative to most other plant species and a moderate growth rate. At maturity, the typical Dotted Smartweed (Punctatum) will reach up to 3.2 feet high, with a maximum height at 20 years of 0 inches.

The Dotted Smartweed (Punctatum) is easily found in nurseries, garden stores and other plant dealers and distributors. It can be propagated by seed. It has a rapid ability to spread through seed production and the seedlings have medium vigor. Note that cold stratification is not required for seed germination and the plant cannot survive exposure to temperatures below 32°F. has low tolerance to drought and restricted water conditions.

Plant Basics
Growth Rate Moderate
General Type Forb/herb
Growth Period Summer
Growth Duration Annual, Perennial
Lifespan Short
Plant Nativity Native to U.S.
Commercial Availability Routinely Available
Physical Characteristics
Bloom Period Summer
Displays Fall Colors No
Shape/Growth Form Single Crown
Drought Tolerance Low
Shade Tolerance Intolerant
Height When Mature 3.2
Vegetative Spread None
Flower Color White
Flower Conspicuousness Yes
Fruit/Seed Abundance Medium
Fruit/Seed Seasonality Summer Fall
Seed Spread Rate Rapid
Gardening Characteristics
Propagations (Ways to Grow) Seed
Moisture Requirements Medium
Cold Stratification Required No
Minimum Temperature 32
Soil Depth for Roots 14
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 6–8.7 pH
Precipitation Range 12–12 inches/yr
Planting Density 0–0 indiv./acre
Soil Textures Coarse, Fine, Medium
Soil Depth for Roots 14
Minimum Frost-Free Days 110 day(s)
Salinity Tolerance Medium
CaCO3 Tolerance Medium
Sustainability & Use
Leaf Retention No
Fire Resistant No
Causes Livestock Bloating None

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