Polygonum amphibium - Water Smartweed
Family: Polygonaceae Growth Form: Forb/Herb
Hydro Zone: -12 to 3 NWC: OBL
C-value: 4 Max Height: 3
Hardiness Zones: -23dF Light: Thrives in full sun
Bloom: 10 June- 1 Oct Collect Seed: Fall
Similar Species:
Distinguishing Characteristics: Aquatic-adapted; Floating branches with alternate, smooth, eliptical leaves with rounded tips; Flowers arranged in oval/connical cluster 1/5-4 cm.
Early Growth

Mid Growth

Full Growth



Distinguishing Characteristic