A series of studies in three western states looked at using sheep to graze larkspur (Delphinium spp.) plants before cattle were allowed in the area in order to reduce poisoning. The first study examined the consumption of waxy larkspur over four years in southwest Montana. One hundred waxy larkspur plants were identified and marked prior to sheep grazing, which occurred in late June. Following grazing plants were relocated; total stems per plant, number of flowering heads removed and defoliation of leaves was recorded each year. The second study looked at utilization of tall and duncecap larkspur on 4 sites at vegetative, bud and flower growth stages. Amount of larkspur consumed and trampled were measured.
Citations and enhanced abstracts for journals articles and documents focused on rangeland ecology and management. RSIS is a collaboration between Montana State University, University of Idaho, and University of Wyoming.