Toxic Plant Parts

This is a basic list of toxic plant parts you need to know. This is not a definitive list of all plants with toxic parts.

Almond tree leaves, stems, roots, including the shell surrounding the edible kernel.
Apple seeds
Apricot – Inner seed
Balsam Pear – Seeds, the rind of the fruit.
Avocado tree leaves, stems, roots, and unripe fruit.
Black Walnut hulls and bark
Cashew shells contain a toxic, poisonous oil.
Cherry twigs, leaves, seed pits
Fig milky sap in leaves and fruit. But the fruit itself is alright.
Nectarine seed, inner pit
Oak Trees, leaves, and acorns.
Peach pit, inner seed, leaves, and bark
Pear seeds, leaves, and bark
Plum leaves, seeds, and bark
Sorghum, all part
Tomato plant leaves and stems are toxic/poisonous, but not the tomato itself.
Walnut outer green hulls
Wild Black Cherry (Choke Cherry, Rum Cherry) All parts. Withered leaves are poisonous.

Asparagus – Berries and eating green shoots raw may cause dermatitis.
Eggplant, leaves, stems, roots are toxic except the fruit.
Elderberry – all parts
Fava bean, raw or half-cooked beans. Some people are allergic to fava bean and come down with “fava bean fever.”
Horse beans are toxic raw or half-cooked beans.
Kidney Beans as few as five raw beans or a single undercooked kidney bean can cause severe nausea, diarrhea, vomiting, and abdominal pains.
Potato foliage/leaves/eyes/sprouts are poisonous, toxic, and can be fatal.
Rhubarb, leaves, and uncooked stems are toxic. Always cook rhubarb.
Rosemary – leaves in some species.
Sage – leaves of some species.
Wild onion – (also cultivated onion) – all parts are toxic except the onion bulb.
Wild Parsnip roots and foliage. Some people get heartbeat irregularities after eating parsnip.

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