Biocontrol releases began in April this year. Most releases are made by personnel from the Colorado Department of Agriculture Insectary located in Palisade, Colorado. Most of the biocontrol insects are reared at the insectary, but others are obtained from the USDA laboratories in Niles, Michigan and Mission, Texas. In 1997 releases were made for 11 weeds.
Weed (No. of Releases)
Dalmatian Toadflax (1)
Diffuse Knapweed (73)
Leafy Spurge (139)
Musk Thistle (133)
Puncturevine (5)
Purple Loosestrife (5)
Spotted Knapweed (8)
Yellow Toadflax (8)