| Plant | Scientific name | Status | Toxic parts |
|---|---|---|---|
| Death Camas | Toxicoscordion venenosum | Deadly | Whole plant, especially bulbs |
| Poison Hemlock | Conium maculatum | Deadly | All parts, fresh or dried; most toxic before seed set |
| Water Hemlock | Cicuta maculata | Deadly | Whole plant, most concentrated in the tuberous roots; one root can kill |
| Western Water Hemlock | Cicuta douglasii | Deadly | Roots and lower stems especially |
| Arrowgrass | Triglochin maritima | Toxic | Leaves, especially when stressed |
| Black Nightshade | Solanum nigrum | Toxic | Leaves and green (unripe) berries |
| Bloodroot | Sanguinaria canadensis | Toxic | Rhizome especially |
| Bracken Fern | Pteridium aquilinum | Toxic | Fronds and rhizomes; toxicity is cumulative over weeks |
| Cocklebur | Xanthium strumarium | Toxic | Seeds and seedlings at the two-leaf (cotyledon) stage |
| Coffee Senna & Sicklepod | Senna occidentalis / S. obtusifolia | Toxic | Seeds (especially in grain/hay) and leaves |
| Common Groundsel | Senecio vulgaris | Toxic | Whole plant, fresh or in hay |
| Deadly Nightshade | Atropa belladonna | Toxic | All parts, berries and roots especially |
| Dogbane | Apocynum cannabinum | Toxic | Leaves and stems, fresh or in hay |
| Dutchman's Breeches | Dicentra cucullaria | Toxic | Whole plant |
| False Hellebore | Veratrum spp. | Toxic | Whole plant |
| Fiddleneck | Amsinckia spp. | Toxic | Leaves and seeds (seeds contaminate grain) |
| Halogeton | Halogeton glomeratus | Toxic | Whole plant |
| Horse Nettle | Solanum carolinense | Toxic | Leaves and berries (yellow fruit) |
| Houndstongue | Cynoglossum officinale | Toxic | Whole plant, especially in hay |
| Jimsonweed | Datura stramonium | Toxic | All parts, especially seeds |
| Locoweed | Astragalus & Oxytropis spp. | Toxic | Whole plant; animals may become 'addicted' |
| Mayapple | Podophyllum peltatum | Toxic | Roots, leaves and unripe fruit |
| Milkweed | Asclepias spp. | Toxic | Leaves and stems; narrow-leaved species most toxic; remains toxic in hay |
| Mistletoe | Phoradendron spp. / Viscum album | Toxic | Leaves, stems, berries |
| Pokeweed | Phytolacca americana | Toxic | Roots most toxic; leaves and berries |
| Rattlebox | Crotalaria spp. | Toxic | Seeds and leaves |
| St. John's Wort | Hypericum perforatum | Toxic | Flowering tops; remains active in hay |
| Tansy Ragwort | Jacobaea vulgaris | Toxic | Whole plant; dried plant in hay is eaten readily and remains toxic |
| Viper's Bugloss | Echium vulgare | Toxic | Whole plant |
| White Snakeroot | Ageratina altissima | Toxic | Leaves and stems |
| Burdock | Arctium spp. | Caution | Burs (seed heads) |
| Buttercup | Ranunculus spp. | Caution | Fresh leaves and flowers |
| Canada Thistle | Cirsium arvense | Caution | Spiny leaves; can accumulate nitrate |
| Horsetail | Equisetum arvense | Caution | Whole plant, especially in hay |
| Kochia | Bassia scoparia | Caution | Whole plant in quantity, especially later in the season |
| Lamb's Quarters | Chenopodium album | Caution | Leaves and stems in quantity |
| Purslane | Portulaca oleracea | Caution | Leaves and stems in quantity |
| Queen Anne's Lace | Daucus carota | Caution | None significant |
| Redroot Pigweed | Amaranthus retroflexus | Caution | Leaves and stems, especially on fertilized ground |
| Sensitive Fern | Onoclea sensibilis | Caution | Fronds, especially in hay |
| Stinging Nettle | Urtica dioica | Caution | Fresh plants (stinging hairs) |
| Wild Onion & Wild Garlic | Allium canadense / A. vineale | Caution | Leaves and bulbs in large amounts |
| Yarrow | Achillea millefolium | Caution | Large amounts |
| Yellow Star-thistle | Centaurea solstitialis | Caution | Whole plant over weeks |
| Chickweed | Stellaria media | Safe | — |
| Chicory | Cichorium intybus | Safe | — |
| Dandelion | Taraxacum officinale | Safe | — |
| Fireweed (willowherb) | Chamaenerion angustifolium | Safe | — |
| Goldenrod | Solidago spp. | Safe | — |
| Narrowleaf Plantain | Plantago lanceolata | Safe | — |
| Sow Thistle | Sonchus spp. | Safe | — |
This page is educational and does not replace advice from a veterinarian who has examined your animals. Camelid medicine uses many drugs “extra-label”, so dosing must come from your vet. In an emergency, call your vet first. Read our disclaimer · How we write and review content.