Leafy Spurge

Growth Habit: Perennial, erect, up to 3' tall, spreading by seed or creeping roots.

Leaves: Alternate, long, narrow, ¼" wide and 2" long, usually drooping.

Flowers: Inconspicuous, surrounded by large heart shaped floral leaves which turn yellow-green near maturity.

Fremont County Weed and Pest Biological Control

Since 1978 Fremont County Weed & Pest has been actively involved with research on the biological control of weeds by insects. These biological control agents have been screened in Europe and Asia where our weeds are native, for release in North America. Only insects that are proven to be host-specific are considered to provide safety for related native plants and economic agricultural crops.

Fremont County Weed & Pest was the first in Wyoming to dedicate a staff position to Bio-Control work. In 1999 this position was made a full year benefited position.

In Fremont County we have released 28 species of bio-control agents.

Canada Thistle	Dalmatian Toadflax

Diffuse Knapweed	Field Bindweed

Leafy Spurge	Musk Thistle

Puncturevine	Russian Knapweed

Saltcedar	Spotted Knapweed

Yellow Toadflax	Biological Control Sites