Splitlip Hempnettle


Splitlip Hempnettle (Galeopsis bifida) Mint family

Annual which can grow to 4 ft tall. Flowers purple, pink, white, or pale yellow and grow in clusters at base of leaf stalks. Stems branched, bristly-haired, and square in cross section. Leaves opposite on stalks, egg-shaped to lance-shaped with large rounded teeth and pointed tips. Leaves prominently veined and covered with bristly hairs.

Forms dense stands on disturbed sites, forest edges, riparian areas, meadows, and beaches. Numerous seeds are small and easily spread on shoes, tires, and recreational equipment. Gardeners quickly come to despise this plant.

A close relative with similar invasive habits is Galeopsis tetrahit, or Brittlestem Hempnettle.

More information


National Park Service U.S. Forest Service Kenai Watershed Forum U.S. Fish and Wildlife Service UAF Cooperative Extension Service Homer Soil and Water Conservation District