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Pennsylvania Smartweed (Polygonum pensylvanicum L.)

Image ID: 2013/ar112

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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: Allegheny River Trail
Date:  8/11/2013
Notes: May have 4 to 6 rays.
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Pennsylvania Smartweed may be easily confused with:
We started out as wildflowers from the bicycle trails of western Pennsylvania, but we've grown!