Crown Vetch Infestation

Description

• The weed has a mature height of about 2 feet and has a sprawling growth habit. The plant has five to 10 pairs of oblong-shaped leaflets and blooms with very small, ½-inch, pink or white flowers. The petals have distinct claws the size of the sepals, or outermost green petals surrounding the petals. Crown vetch has a coarse texture.

Invasive Potential

• The plant create serious infestations because of its rapid seeding ability. Also, the creeping roots spread vegetatively and create thick mats. Crown vetch infestations are commonly seen in prairies, dunes, waste grounds and roadsides.

Control

• You can control the infestation of crown vetch with a number of herbicides. The Missouri Department of Conservation recommends the use of triclopyr and glyphosate for crown vetch. Apply herbicides during early spring and fall. For lighter infestations, cover the weed with black plastic for a whole season.