Appearance
Geranium lucidum grows predominantly as an annual weed though it may become biennial depending on moisture conditions.

Foliage
Stems are red-colored growing from a weak central root. Leaves are rounded, deeply lobed with a waxy appearance that makes dense infestations easy to recognize.

Flowers
Flowers are pink with 5 petals and grow interspersed with the leaves; rather than above them.

Fruit
The seeds are small and rapidly transported to un-infested areas on boots, vehicles, and wildlife.

Ecological Threat
Geranium lucidum grows in the Pacific Northwest predominantly as an understory species intermixed with grasses, forbs, and moss.

Citations
Winston, R.L., Andreas, J.E., Milan, J., DesCamp, W., Randell, C.B., and M. Schwarzländer. 2014. New Invaders of the Northwest. United States Department of Agriculture, Forest Health Technology Enterprise Team. FHTET-2014-12. Retrieved from https://www.fs.fed.us/foresthealth/technology/pdfs/FHTET-2014-12_NW_New_Invaders.pdf

 

Selected Images

Maps

Invasive Listing Sources

• California Invasive Plant Council
• Maryland Code and Regulations of Invasive Plants
• Maryland Invasive Species Council - Invasive Species of Concern in Maryland
• National Park Service, Mid-Atlantic Exotic Plant Management Team Invasive Plant List
• Native Plant Society of Oregon, 2008
• New Invaders of the Northwest
• Oregon Noxious Weeds
• Washington Noxious Weeds
• WeedUS - Database of Plants Invading Natural Areas in the United States

References