LEAFY SPURGE

Leafy  Spurge

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

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

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

 
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Yellow Toadflax

Biological Control Agents

 

With only a few, very small infestations of this weed in Fremont County we are working on the eradication of yellow toadflax.

An introduced weevil, Gymnetron antirrhini, that causes a decline in seed production is wide spread across the state and infests the yellow toadflax found in Fremont County.

Gymnetron_Antirrhini Gymnetron antirrhini

For more specific information on Gymnetron antirrhini,visit Cornell University's Bio-control website.

 

 

For more information on Bio-control of Yellow Toadflax visit:

Cornell University's Biological Control Website- Toadflax

Invasive.org- Biology and Biological Control of Dalmatian and Yellow Toadflax (PDF File, 124 pages, LOTS of info)

California Dept. of Food and Agriculture-Toadflax info