Syng 4334 2 15 AdvionWDG Univar DigitalAds 120x600 d02

Pest Information

Panicle Willowweed

Panicle Willowweed

  • Latin Name: Epilobium Paniculatum
  • Common Name: Panicle Willowweed
  • Other Names: Panicled willow herb

Pest Details

Panicle Willowweed
Panicle Willowweed
Panicle Willowweed


Native to the United States.


An annual broadleaf weed, found growing in almost any situation – open ground, roadsides, irrigation ditches, orchards, etc. Seeds germinate through the spring and plants mature through the summer.


Dramatic changes occur as the plant grows – in the early growth stages there is thick foliage, and as the plant matures the foliage drops from it and the stems appear fairly barren. Mature plants may grow as tall as 6 to 7 feet. Leaves in early stages are up to 2 inches long, and elongate with pointed tips. The leaf edges have slightly toothed margins. At the base of each leaf are several much smaller leaves, called “fascicles”. Flowers are small, light pink, and with 4 petals only about ½ inch long. Flowers occur in clusters on stalks at the tips of the stalk. The seed pods are elongate and thin, and when they open to release the seeds in late summer the sides curve strongly around in a circle, exposing the silk-tufted seeds within.

Characteristicts Important to Control:

An annual reproducing from seed, but with seeds widely spread by wind.

Related ProTraining Courses

A300 061796 C4 20 PWGoldSponsor 728x90 r5