Photo by Dan Tenaglia, courtesy www.xidservices.com

Photo by Dan Tenaglia, courtesy www.xidservices.com

Photo by Dan Tenaglia, courtesy www.xidservices.com

Pennsylvania smartweed

Persicaria pensylvanica (syn. Polygonum pensylvanicum)

Weed Characteristics

Other Names: pinkweed, Pennsylvania knotweed, pinweed, hearts-ease, purple head, swamp persicary

Leaf Type: Broadleaf

Flowers: Pink, white

Leaves: Pointed leaves with smooth edges; some hair

Life Cycle: Summer annual

Lance-like leaves on multibranched stems with a low, spreading habit. Leaves are lance-shaped and alternate along stems, green, and may have a black or purple mark in the center. Young leaves and stems are reddish. Knobby pink and white flowers are clustered along spikes at the ends of stems. Tolerates a wide range of soils.

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