Occasionally, cattle and horses are affected. Death camas contains toxic alkaloids that occur throughout the plant. Livestock are poisoned by leaves, stems and flowers. Plants are dangerous at all times. Signs of poisoning include salivation, nausea and vomiting, muscular weakness and staggering, fast but weak pulse, possible convulsionsand coma.
Death occurs from within a few hours to two days.
Severely poisoned animals usually die, while those less seriously affected may recover. After the flowering stalks appear, Tordon 22K at a rate of one to two pints is most effective. Oblique-banded and fruit tree leafroller larva are present on fruit trees and some ornamental plants in the Rosaceae family. In some locations they are at a treatment threshold of four live larvae per 10-branch sample. Boxelder leafrollers are still present in late instar stages and have reached a 50-percent leaf infestation level at several locations in Missoula.