Apple (Balsam)
Apple (Bitter)
Bryony, Black
Bryony, European White
Bryony, White
Cabbage Tree
Calabar Bean
Cherry Laurel
Coca, Bolivian
Cocculus, Indicus
Dropwort, Hemlock Water
Hellebore, Black
Hellebore, False
Hellebore, Green
Hellebore, White
Hemlock, Water
Hemp, Indian
Ignatius Beans
Ivy, Poison
Laurel, Mountain
Lovage, Water
Mescal Buttons
Nightshade, Black
Nightshade, Deadly
Nux Vomica
Paris, Herb
Poppy, White
Saffron, Meadow
Wake Robin, American

Poisonous food plants

Potato (Solanum tuberosum) Can contain the glycoalkaloid solanine; this develops as the eyes prepare to sprout chiefly as a result of exposure to light. Green tinged flesh is a sign that this process has begun. Some regard raw potatoes as inedible. Cooked potatoes are softer and easier to chew.
Apple (Malus domestica) Seeds contain cyanogenic acids in them; although the amount found in most apples won't kill a person, with enough seeds, one could die from it.
Tomato (Solanum lycopersicum) Foliage and vines contain alkaloid poisons
Rhubarb (Rheum rhaponticum) Leaves contain oxalic acid salts
Cherry (Prunus cerasus), as well as other species such as peach, plum, almond and apricot (Prunus) Leaves and pits contain cyanogenic glycosides
Pokeweed (Phytolacca sp.) Leaves, berries and roots contain phytolaccatoxin and phytolaccigenin - toxin in young leaves is reduced with each boiling and drainin
 Poisonous ornamental plants

Castor Oil Plant (Ricinus communis) Castor Oil Plant; The phytotoxin is ricin, a water soluble protein, which is concentrated in the seed. Also present are ricinine, an alkaloid, and an irritant oil.
Angel's Trumpet (Brugmansia); All parts of the plant contains the tropane alkaloids scopolamine and atropine.
Datura; Contains the alkaloids scopolamine and atropine. Datura has been used as a hallucinagenic drug by the native peoples of the Americas.[1]


Poinsettias (Euphorbia pulcherrima) Notable for not being poisonous, despite persistent beliefs to the contrary, although may cause an upset stomach.

Poisonous wild plants

Poison Ivy (Toxicodendron radicans), Poison Oak (T.diversilobum), and Poison Sumac (T.vernix) All contain a highly irritating oil known as urushiol (this is actually not a poison but an allergen)
Deadly Nightshade/Belladonna (Atropa belladonna) All parts of the plant contain the toxic alkaloid atropine
Black nightshade (Solanum nigrum) All parts of the plant except the ripe fruit contain the toxic glycoalkaloid solanine
Poison Hemlock (Conium maculatum) All parts of the plant contain the relatively simple alkaloid coniine
Mayapple (Podophyllum peltatum) Green portions of the plant, unripe fruit, and especially the rhizome contain the non-alkaloidal toxin podophyllotoxin
Darnel/Poison Ryegrass (Lolium temulentum) The seeds and seed heads of this common garden weed may contain the alkaloids temuline and loliine. Some experts also point to fungus ergot or fungi of the genus endoconidium that grow on the seed heads of rye grasses.[2]
Monkshood All parts of the plant are highly poisonous. Ancient warriors used it to poison their enemies water supplies. Also used for killing wolves and panthers