steroidal alkaloids
Flower Color:
  • flower color
  • flower color
meadows, waterside, woodlands, mountains

Time of Greatest Risk


Geographical Distribution

Deathcamas distribution - United States

Related Species


Zigadenus venenosus

Black Snakeroot, Deadly Zigadene, Hog Potato, Mystery-grass,Meadow Deathcamas
10/ 10
Deathcamas (Zigadenus venenosus) is a highly poisonous perennial herb found throughout most of the western United States. It is a member of the lily family, which includes Allium spp (garlic, onions), fly poison, lily of the valley, and many other species. Z. venenosus have a single, erect, unbranched, sparingly leafed stem; it is grass-like and has greenish or yellowish white flowers that arise from a bulb. Flowers occur in a cluster atop a central stack.

Toxic components
Z. venenosus contains zygacine, a neurotoxic steroidal alkaloid. It is usually not actively eaten by horses, as they dislike the taste, however hungry horses that aren't provided with an alternative food source are at risk. Horses have an increased risk of ingestion of Z. venenosus in the spring, as it is one of the first plants to emerge. Fresh leaves, stems, bulbs, and flowers of Z. venenosus are poisonous, but the seeds are particularly deadly. The amount of toxins in Z. venenosus varies depending on the season, climate, soils, and geographical location.

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