PlantFiles: Hairy Vetch, Russian Vetch
Vicia villosa

Vicia villosa is considered invasive by the Minnesota DNR
"Ecological Threat:

* Both vetches are not a threat to healthy native prairies at this time, but can be a problem in prairie reconstructions and on disturbed sites.
* They grow best on the dry sandy soils of disturbed fields and thickets.
* Both vetches have naturalized in the U.S. and are grown for forage, green fertilizer or cover crop. They occur throughout the eastern and midwestern states extending into southern Canada."

This plant is eye-catching, abundant with beautiful late spring blooms as it grows wild on the dry hot roadsides of Sacramento, but adjacent property owners have warned me that it is a nightmare to remove - very invasive. Lupine is a better alternative for the area with the same effect.