Gastrointestinal irritants Philodendron Dieffenbachia Pokeweed Wisteria Spurge laurel Buttercup Daffodil Rosary pea Castor bean Digitalis effects Lily-of-the-valley Foxglove Oleander Yew Nicotinic effects Wild tobacco Golden chain tree Poison hemlock Atropinic effects Jimsonweed (thorn apple) Deadly nightshade Epileptogenic effects Water hemlock Cyanogenic effects Prunus species (chokecherry, wild black cherry, plum, peach, apricot, bitter almond) Pear (seeds) Apple (seeds) Crab apple (seeds) Hydrangea