The goal of this program is not the elimination of tall larkspur but the inhibition of grazing by cattle as it is poisonous to cattle. Tall larkspur is a native plant and the biocontrol agent is a native true bug, Hoplomachus affiguratus. The feeding damage by H. affiguratus makes the plant less palatable to cattle. The program is small and arrangements for collection and redistribution can be made by contacting the Insectary. These insects are not shipped out for general use.