In many cases only a certain part of the plant is toxic.
The list was copied from "A Practical Guide for Feeding Captive Reptiles" by Fredric L. Frye (1991).
plant - toxic part of the plant
(every other part is not toxic)
Acokanthera Flowers and fruit
Aconite (monk's hood) Roots, flowers, leaves and seeds
Amaryllis Bulb, stem, flower parts
Amsinckia (Tarweed) Foliage and seeds
Anemone Leaves, flowers
Apple Seeds
Apricot Inner seeds
Autumn crocus Bulbs
Avocado Foliage
Azalea Foliage, flowers
Baneberry Foliage, fruits
Beach pea Foliage, peas, and pods
Betal nut palm All parts
Belladonna Berries and other parts
Bittersweet Berries
Bird of paradise Foliage, flowers, seed pods
Black locust Bark, sprouts, and foliage
Bleeding heart Foliage, flowers, and roots
Bloodroot All parts
Bluebonnet Foliage and flowers
Bottlebrush Flower parts
Boxwood Foliage and twigs
Buckeye horse chestnut Sprouts and nuts
Buttercup All parts
Caladium All parts
Calla lily All parts
Cardinal flower All parts
Carolina jessamine Foliage, flowers, and sap
Casava Roots
Castor bean Uncooked beans
Chalice or trumpet vine All parts
Cherry Inner pit seeds
Cherry laurel Foliage and flowers
China berry tree Berries
Christmas berry Berries
Christmas cactus Entire plant
(Euphorbia)
Christmas rose Foliage and flowers
Columbine Foliage, flowers, seeds
Common privet Foliage and berries
Coral plant All parts
Crocus Bulbs
Croton Foliage, shoots
Cyclamen Foliage, stems, and flowers
Daffodil Bulbs, foliage, flowers, and pods
Daphne Berries
Death camus All parts are toxic; esp. roots
Deadly nightshade Foliage, unripe fruit, sprouts
Delphinium Bulbs, foliage, flowers and seeds
Destroying angel All parts of the mushroom
(death cap)
Dogwood Fruit mildly toxic
Dumb cane (Dieffenbachia) Foliage
Eggplant Foliage only
Elderberry Leaves, bark, and shoots
Elephant ear (taro) Foliage
English ivy Esp. berries
Euphorbia (spurge(s)) Foliage, flowers, latex-like sap
False hellebore All parts
Fiddleneck (Senecio) All parts
Fly agaric All parts
(amanita, deathcap)
Four o'clock All parts
Foxglove (digitalis) Foliage and flowers
Gelsemium All parts
Golden chain Seeds and pods
Hemlock All parts
Henbane All parts
Holly Foliage and berries
Horse chestnut All parts
Horsetail reed (Equisetum) All parts
Hyacinth Bulbs, foliage and flowers
Hydrangea All parts
Impatiens All parts
(touch-me-not)
Iris (flags) Bulbs and roots, foliage and flowers
Ivy (all forms) Foliage and fruit
Jack-in-the-pulpit Roots are mildly toxic
Jasmine Foliage and flowers, esp. nectar
Jasmine, star Foliage, flowers
Jatropha Seeds and oily sap
Jerusalem cherry Foliage and fruit
Jessamine Berries
Jimson weed Foliage, flowers and pods
(thorn apple)
Johnson grass, wilted All parts
Lambkill (sheep laurel) Foliage
Lantana camara Foliage, flowers, and esp. berries
Larkspur Entire young plant; seeds & pods
Laurel All parts
Lily of the valley Foliage and flowers
Lobelia All parts
(Zygadenus venenosus)
Locoweed All parts
Locust(s) All parts
Lupine Esp. seeds and pods, foliage
Machineel All parts
Marijuana All parts
May apple Fruit
Mescal All parts may be toxic
Milk weed Foliage
Mistletoe Foliage and berries
Moccasin flower Foliage and flowers
Monkshood Entire plant, including roots
Moonseed Berries
Morning glory Foliage, flowers, and seeds
Mountain laurel Young leaves and shoots
Mushrooms Entire cap and stem (some wild forms)
Narcissus Bulb, flowers
Natal cherry Berries, foliage
Nectarine Only inner pit seeds
Nicotine plant Foliage and flowers
Nightshades All parts, esp. unripe fruits
Oak trees Leaves and acorns
Oleander Foliage, stems, and flowers
Peach Inner pit seeds
Pear Seeds (only if crushed)
Pennyroyal Foliage and flowers
Peony Foliage and flowers
Periwinkle All parts
Philodendrons All parts (some species )
Pinks All parts
Plum Inner seeds; foliage can be toxic
Poinsettia Foliage, flowers and latex sap
Poison hemlock Foliage and seeds
Poison ivy Foliage and fruit
Poison oak Foliage and fruit
Poison sumac Foliage and fruit
Pokewood or pokeberry Roots, fruit
Poppy (except California) All parts
Potato Raw foliage and sprouts ("eyes")
Privet Berries, foliage
Redwood Resinoids leached when wood is wet
Rhubarb Uncooked foliage and stems
Rhododendron Foliage and flowers
Rosary pea Foliage, flowers and peapods
Rosemary Foliage in some species
Russian thistle Foliage and flowering parts
Sage Foliage in some species
Salmonberry Foliage and fruit
Scarlet pimpernel Foliage, flowers and fruit
Scotch broom Seeds
Senecio ("fiddle neck") All parts
Skunk cabbage Roots
Snapdragon Foliage and flowers
Spanish bayonet Foliage and flowers
Squirrel corn Foliage, flowering parts, and seeds
Sudan grass, wilted All parts
Star of Bethlehem Foliage and flowering parts
Sundew Foliage
Sweetpea Stems
Tansy Foliage and flowers
Taro (elephant ears) Foliage
Tarweed Foliage and seeds
Tiger lily Foliage, flowers, and seed pods
Toad flax Foliage
Tomato plant Foliage and vines
Toyon berry Berries
Tree of heaven Foliage and flowering parts
Trillium Foliage
Trumpet vine All parts
Tulip Bulb, foliage, and flowering parts
Venus flytrap Foliage and funnel flowering parts
Verbena Foliage and flowers
Vetch (several forms) Seeds and pods
Virginia creeper Foliage and seed pods
Water hemlock Roots and foliage
Wild parsnip Underground roots and foliage
Wisteria Foliage, seeds, and pods
Yellow star thistle Foliage and flowering parts
Yew Foliage