Acocanthera (fruit and flowers)

Euphorbia, or spurges (foliage, flowers, sap)

Peony (foliage flowers)

Amaryllis (bulbs)

False henbane (ALL)

Periwinkle (ALL)

Amsinckia (or tarweed; foliage, seeds)

Fiddleneck, or senecio (ALL)

Philodendron (leaves and stem)

Anemone (ALL)

Fly agaric, or amanita (ALL)

Pikeweed (leaves, roots, immature berries)

Angel trumpet (flowers, leaves)

Four o'clock (ALL)

Pine needles (berries)

Apple (seeds)

Foxglove (leaves, seeds)

Plum (foliage, inner seed)

Apricot (pits, inner seed)

Gelsemium (ALL)

Poinsettia (leaves, flowers)

Atropa autumn crocus (bulbs)

Ghostweed (ALL)

Poison hemlock (foliage, seeds)

Avocado (foliage)

Golden chain, or laburnum (ALL, especially seeds)

Poison ivy (sap)

Azalea (leaves)

Hemlock (ALL especially roots and seeds)

Poison oak and sumac (foliage, fruit, sap)

Balsam pear (seeds, outer rind of fruit)

Henvane (seeds)

Pokeweed, or poke cherry roots, (fruit)

Baneberry (berries, roots)

Holly (berries)

Poppy (ALL)

Beach pea (ALL)

Horse chestnut (nuts, twigs)

Potato (eyes, new shoots)

Belladonna (ALL especially black berries)

Horsetail reed, or equisetum (ALL)

Privet (all parts, including berries)

Betel nut palm (ALL)

Hyacinth (bulbs)

Redwood (resinoids, leached wet wood)

Bird of paradise (seeds)

Hydrangea (flower bud)

Rhododendron (ALL)

Bittersweet (berries)

Impatiens, or touch-me-not (ALL)

Rhubarb (leaves)

Black locust (bark, sprouts, foliage)

Indian turnip, or jack-in-pulpit (ALL)

Rosary peas (seeds)

Bleeding heart (foliage, roots)

Iris, or blue flag (bulbs)

Rosemary (foliage in some species)

Bloodroot (ALL)

Ivy (ALL)

Russian thistle (foliage, flowers)

Bluebonnet (ALL)

Jasmine (foliage, flowers, sap)

Sage (foliage in some species)

Blue-green algae (some forms are toxic)

Jasmine star (foliage, flowers)

Salmonberry (foliage, fruit)

Bottlebrush (flowers)

Jatropha (seeds, sap)

Scarlet pimpernel (foliage, flowers, fruit)

Boxwood (leaves, stems)

Java bean, or lima bean (uncooked bean)

Scotch broom (seeds)

Buckeye horse chestnut (sprouts, nuts)

Jerusalem cherry (berries)

Senecio, or fiddleneck (ALL)

Buckthorn (fruit, bark)

Jessamine (berries)

Skunk cabbage (ALL)

Buttercup (sap, bulbs)

Jimsonweed (foliage, flowers, seed pods)

Snapdragon (foliage, flowers)

Calla lily (leaves)

Johnson grass (ALL)

Snowdrop (ALL, especially buds)

Caladium (leaves)

Juniper (needles, stems, berries)

Snow on the mountain, or ghostweed (ALL)

Cardinal flower (ALL)

Laburnum (ALL)

Spanish bayonet (foliage, flowers)

Carolina Jessamine (foliage, flowers, sap)

Lambkill, or sheep laurel (ALL)

Sudan grass (ALL)

Cassava (roots)

Lantana (immature berries)

Star of Bethlehem (foliage, flowers)

Castor bean (or castor oil-beans; leaves)

Larkspur (ALL)

Sundew (foliage)

Chalice vine or trumpet vine; (ALL)

Laurel (ALL)

Sweet pea (seeds, fruit)

Cherry tree (bark, twigs, leaves, pits)

Lily of the valley (all parts including water in which they have been kept)

Tansy (foliage)

Cherry laurel (foliage, flowers)

Lobelia (ALL)

Taro, or elephant's ear (foliage)

Chinaberry tree (berries)

Locoweed (ALL)

Tiger lily (foliage, flowers, seed pods)

Christmas berry (berries)

Lords and ladies, or cuckoopint (ALL)

Toad lax (foliage)

Christmas cactus (sap)

Lupine (foliage, pods, seeds)

Tobacco (leaves)

Christmas candle (sap)

Machineel (ALL)

Tomato (foliage, vines)

Christmas rose (foliage, flowers)

Marijuana (leaves)

Touch-me-not (ALL)

Coral plant (seeds)

Mayapple (all parts except fruit)

Toyon berry (berries)

Crocus (bulbs)

Mescal bean (seeds)

Trillium (foliage)

Croton (foliage, shoots)

Milkweed (foliage)

Trumpet vine (ALL)

Cyclamen (foliage, stems, flowers)

Mistletoe (berries)

Venus flytrap (ALL)

Daffodil (bulbs)

Moccasin flower (foliage, flowers)

Verbena (foliage, flowers)

Daphne (berries)

Mock orange (fruit)

Virginia creeper (sap)

Datura (berries)

Monkshood (leaves, roots)

Wild parsnip (roots, foliage)

Deadly amanita (ALL)

Morning glory (ALL)

Wisteria (ALL)

Deadly nightshade (ALL)

Mountain laurel (leaves, shoots)

Yam bean (roots, immature roots)

Death camas (ALL)

Mushrooms (most wild forms, caps, stems)

Yellow star thistle (foliage, flowers)

Death cap mushroom (ALL)

Narcissus (bulbs)

Yew (American, English and Japanese varieties; needles)

Delphinium (ALL)

Natal cherries (berries, foliage)

Deiffenbachia or dumb cane (leaves)

Nectarine (seeds, inner pit)

Dogwood (fruit)

Nicotine bush (foliage, flowers)

Dutchman's breeches (foliage, roots)

Nightshades (all varieties; berries, leaves)

Eggplant (all parts except fruit)

Oak (acorns, foliage)

Elderberry (foliage)

Oleander (leaves, branches, and nectar of blossoms)

Elephant's ear, or taro (leaves, stem)

Peach (fruit pit)

English ivy (berries, leaves)

Pear (seeds)

Equisetum (ALL)

Pennyroyal (foliage, flowers)