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Pennsylvania Smartweed (Polygonum pensylvanicum L.)
Image ID: mor8Tap/mouseover and drag to zoom/pan.
Other common names: Pink Knotweed
Family: Polygonaceae (Buckwheat)
Height: 1 to 4 ft.
Blooms: May to October
Leaf Type: smooth
Bloom Size: 0.12 in. (typical)
Flower Description: Elongate clusters, Regular blooms, 4 parts
Location: Moraine State Park
Notes: May have 4 to 6 rays.
More photos of this flower
- Lady's Thumb
Lady's thumb has a distinctive triangular dark spot on its leaf.
- Swamp Smartweed
Swamp smartweed typically has a longer flower cluster and a larger leaf. Smartweeds are difficult to tell apart.
We started out as wildflowers from the bicycle trails of western Pennsylvania, but we've grown!
Meyer, Joseph E. (1918). The Herbalist and Herb Doctor. Hammond, Ind.: Indiana Herb Gardens. 400 pp.