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Swamp Smartweed (Polygonum amphibium)
Image ID: yrt159Tap/mouseover and drag to zoom/pan.
Other common names: Water Knotweed
Family: Polygonaceae (Buckwheat)
Height: 2 to 3 ft.
Blooms: July to September
Leaf Type: smooth
Bloom Size: 0.125 in. (typical)
Flower Description: Elongate clusters, Irregular blossoms
Location: Youghiogheny River Trail
More photos of this flower
- Lady's Thumb
Lady's thumb has a distinctive triangular marking on the leaf. Swamp smartweed typically has a longer flower cluster and a larger leaf.
- Pennsylvania 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!