Horses

African Rue, Peganum harmala
Beefsteak-plant, Perill Mint Perilla frutescens
Bermudagrass Cynodon dactylon
Bishop’s-Weed, Greater Ammi Ammi majus
Black Locust Robinia pseudo-acacia
Bracken Fern, Pteridium aquilinum
Broom Snakeweed, Perennial Broomweed; Gutierrezia microcephala and G. sarothrae
Buttercup Ranunculus spp.
Castor-Bean Ricinus communis
Chinaberry Melia azedarach
Cocklebur, Xanthium spp.
Dallisgrass Ergot Claviceps paspali
Desert Tobacco, Nicotiana trigonophylla
Dutchman's Breeches, Thamnosma texana
Golden Corydalis, Corydalis aurea
Gordon Bladderpod, Lesquerella gordonii
Groundsels - Riddell Groundsel, Broom Groundsel; Senecio riddellii
Groundsels - Texas Groundsel, Texas Squaw-Weed; Senecio ampullaceus
Groundsels - Threadleaf Groundsel, Senecio; Senecio longilobus
Hairy Vetch, Vicia villosa
Jimsonweeds, Thornapples; Datura spp.
Johnsongrass, Sorghum halepense
Kleingrass, Panicum coloratum
Knotweed, Polygonum spp.
Kochia, Kochia scoparia
Lanceleaf Salvia, Salvia reflexa
Largeleaf Lantana, Lantana camara
Larkspur, Delphinium spp.
Locoweed - Peavine, Emory Loco; Astragalus emoryanus
Locoweed - Woolly Loco, Purple Loco; Astragalus mollissimus var. mollissimus
Locoweed - Garboncillo, Wooton Loco, Rattleweed; Astragalus wootonii
Maple, Acer spp.
Mesquite, Prosopis glandulosa
Milkweed - Antelopehorn Milkweed, Asclepias asperula
Milkweed - Broad-leafed Milkweed, Asclepias latifolia
Milkweed - Horsetail Milkweed, Asclepias subverticillata
Mountain Mahogany, Cercocarpus montanus
Nightshade - Buffalo bur, Solanum rostratum
Nightshade - Carolina Horse Nettle, Horse Nettle Solanum carolinense
Nightshade - Black Nightshade Solanum ptycanthum
Nightshade - Silverleaf Nightshade, Solanum eleagnifolium
Deathcamas, Nuttall Deathcamas Zigadenus nuttallii
Oak, Quercus spp.
Common Oleander, Nerium oleander
Poison Hemlock, Conium maculatum
Pokeberry, Pokeweed, Phytolacca americana
Rayless Goldenrod, Jimmyweed; Isocoma wrightii
Red Buckeye, Pale Buckeye, Aesculus pavia
Russian Thistle, Tumbleweed; Salsoa kali var. tenuifolia
Ryegrass Ergot, Claviceps purpurea
Senna - Coffee Senna, Senna occidentalis
Senna - Lindheimer Senna, Senna lindheimeriana
Senna - Sicklepod Senna, Senna obtusifolia
Senna - Twinleaf Senna, Senna roemeriana
Singletary Pea, Lathyrus hirsutus
Smallhead Sneezeweed, Helenium microcephalum
Spotted Water Hemlock, Circuta maculata
Starthistles, Centaurea solstitialis, C. melitensis
Sweetclover, Melilotus spp.
Tree Tobacco, Nicotiana glauca
White Snakeroot, Eupatorium rugosum
Whitebrush, Beebrush; Aloysia lycioides
Wild Indigo, Baptisia spp.
Wild Onion, Allium spp.
Wild Plum, Wild Cherry, Wild Peach; Prunus spp.