Japanese Hops

Two leaves are in the center of the image. The leaves are light bright green. They have a similar shape as maple leaves. In the background are more of the same leaves as well as a few other plants.

Other names: Japanese Hops, Humulus japonicus

Where did it come from?

Japanese hops was introduced from east Asia in the late 1800s. It was imported to be used as an ornamental plant.

Why is it invasive?

The hairs on the stem can irritate skin and the pollen can cause allergic reactions. Japanese hops out competes other plants and forms thick blankets that disrupt the ecosystem.

How do you prevent its spread?

Remove seeds from clothing, pets, vehicles, etc.

Resources:

♦ Species assessment

♦ Japanese Hops Summary

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Image credit: Chris Evans, University of Illinois, Bugwood.org