Plants Poisonous to Livestock - Animal Science

PLEASE NOTE:
"Poisonous" does not mean deadly. Some manifestations of toxicity are subtle. The dose, as always, determines if a plant is safe source of nutrients or a toxic hazard.

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Scientific Name	Common Name(s)	Species Most Often Affected	Parts Poisonous	Primary Poison(s)
Aconitum spp.	Monkshood, Aconite, Wolfsbane	humans, cattle, goats	leaves, roots, all	aconitine
Aesculus spp.	Horse Chestnut, Buckeye	humans, cattle, goats	fruit	Unknown, possibly saportins, narcotic alkaloids, or glycosides.
Agrostemma githago	Corn Cockle	poultry, cattle, humans, goats	seeds	githagin
Apocynum spp.	Dogbane	horses, cattle, humans, sheep, cats, dogs, goats	rhizome	apocynamarin
Argemone mexicana	Prickly Poppy, Mexican Poppy	goats	all	sanguinarine
Asclepias spp.	Milkweed	sheep, cattle, goats	leaves, fruits, stems	desglucosyrioside, syrioside
Atropa belladonna	Belladonna, Deadly Nightshade	humans, goats	all	atropine and scopalamine
Brassica spp,	Rape, Cabbage, Turnips, Broccoli, Mustard	cattle, humans, swine, sheep, goats, poultry	roots, seeds	glucosinolates, brassica, anemia factor
Cannabis sativa	Marijuana	dogs, ferrets, cats, goats	all, flower stalks	resins, THC
Convallaria majalis	Lily of the Valley	cats, dogs, humans, goats	all	cardiac glycosides and saponins
Datura spp.	Jimsonweed, Downy Thornapple, Devils Trumpet, Angels Trumpet	cattle, humans, horses, goats	flowers, leaves, seeds	atropine, scopalamine, and hyoscyamine
Delphinium spp.	Delphiniums, Larkspurs	cattle, humans, goats	all	alkaloids delphinine, ajacine, and others
Digitalis purpurea	Foxglove	cats, cattle, dogs, goats, horses, humans	flowers, leaves, seeds	cardiac or steroid glycosides
Eupatorium rugosum	White Snakeroot	cattle, dogs, goats, horses, humans, rabbits, sheep	all	tremetone
Fagoypyrum esculentum	Buckwheat	horses, goats
Gelsemium sempervirens	Jessamine	horses, goats	all	gelsemine
Glechoma spp.	Ground Ivy, Creeping Charlie, Gill over the ground	horses, goats	leaves, stems	unknown
Hypericum perforatum	St. Johns Wort, Klamath Weed	horses, sheep, goats	all	hypericum
Lantana camara	Lantana, Red Sage, Yellow Sage, West Indian Lantana	cattle, dogs, goats, cats, humans, sheep	unripe, green berries	triterpenes
Leucothoe axillaris and Leucothoe davisiae	Drooping Leucothoe, Sierra Laurel	goats, sheep	leaves, nectar	andromedotoxin
Lobelia spp.	Great Lobelia, Cardinal Flower, Indian Tobacco	humans, goats	all	lobelamine, lobeline
Lupinus spp.	Lupine	cattle, goats	seeds	lupinine, anagyrine, sparteine, and hydroxylupanine
Menispermum canadense	Moonseed	humans, goats	all	dauricine
Nerium oleander	Oleander	horses, cattle, sheep, dogs, humans, goats	all, leaves, stems	nerioside, oleandroside, saponins, cardiac glycosides
Prunus spp.	Wild Cherries, Black Cherry, Bitter Cherry, Choke Cherry, Pin Cherry	horses, cattle, moose, sheep, swine, goats	seeds, leaves	amygdalin, prunasin
Ranunculus spp.	Buttercup, Crowfoot	cattle, goats, horses	all	protoanemonin
Rheum rhaponticum	Rhubarb	goats, humans, swine, horses	leaves	anthraquinones, oxalate
Robinia pseudoacacia	Black Locust	horses, cattle, humans, poultry, sheep, goats	bark, leaves, seeds	robin, phasin
Sambucus canadensis	Elderberry	cattle, humans, goats	leaves, twigs, roots, unripe fruits	sambunigrin
Sanquinaria canadensis	Bloodroot	goats
Senecio spp.	Senecio, Groundsels, Ragwort	horse, cattle, goats, sheep, human	leaves	jacobine, seneciphylline
Solanum spp.	Common Nightshade, Black Nightshade, Horse Nettle, Buffalo Bur, Potato	cattle, humans, rodents, sheep, horses, goats	leaves, immature fruit	soladulcidine,solanine
Sorghum spp.	Sorghum, Milo, Sudan Grass, Johnson Grass	horses, cattle, goats	leaves, stems	dhurrin, nitrate
Rheum rhaponticum	Rhubarb	goats, humans, swine, horses	leaves	anthraquinones, oxalate

Department of Animal Science - Plants Poisonous to Livestock