Plants can be toxic to horses

Alsike Clover
Azalea, Rhododendron
Star of Bethlehem
Black Locust
Black Walnut
Bouncing Bet
Brackenfern
Buckeye and Horsechestnut
Bulbs
Common Burdock
Buttercup
Castorbean
Catnip
Cherry
Christmas Plant (Poinsettia)
Cocklebur
Dumbcane (Aroids)
Dutchman's Breeches
Easter Lily
English Ivy
Ergot
Fescue
Foxtail Barley		 Green False Hellebore
Poison Hemlock
Water Hemlock
Buckeye and Horsechestnut
Horsetail
English Ivy
Jack-in-the-Pulpit
Jimsonweed
Johnsongrass
St. Johnswort
Larkspur
Easter Lily
Black Locust
Lupine
Red Maple
Marijuana
Milkweed
Mustards
Tansy
Tobacco
Black Walnut
Water Hemlock
White Snakeroot		 Yellow & White Sweetclover
Yew
Stinging Nettle
Nightshades
Red Oak
Oats
Oleander
Pigweed
Christmas Plant (Poinsettia)
Poison Hemlock
Pokeweed
Jack-in-the-Pulpit
Senecio, Ragwort
Red Maple
Azalea, Rhododendron
Rhubarb
Rosary Pea
White Snakeroot
Spurges
St. Johnswort
Star of Bethlehem
Yellow & White Sweetclover