» Poisonous Plants

Family: Euphorbiaceae Scientific name: Ricinus communis L. Common name: Castorbean Description: This species is generally described as an treelike shrub, but in cold climates it is grown as an annual. The leaves are alternate and palmate with 5 to 11 … more »

Family: Polypodiaceae Scientific name: Pteridium aquilinum (L.) Kuhn Common name: Brackenfern Description: This cosmopolitan perennial fern starts the growth of its fronds in June, and they remain green until early October. The fronds reach a height of 2 to 4 … more »

Family: Berberidaceae Scientific name: Caulophyllum thalictroides (L.) Michx. Common name: Blue cohosh Description: This perennial glabrous herb arises from rough rootstocks and may reach a height of more than 2 feet. The yellowish-green flowers appear in late April and May … more »

Family: Solanaceae Scientific name: Solanum dulcamara L. Common name: Bitter nightshade Description: This woody perennial can have a straggling or climbing stem up to 6 feet in length. Leaves are alternate, petiole, some simple and entire, and others with a … more »