Plants known to be toxic to Tortoises Aconite ( monks hood ) Autumn crocus Baneberry Betal nut palm Belladonna Boxwood Crocus Daffodil Death camus Deadly nightshade Destroying angel ( death cap ) Fly agaric ( aminata, deathcap ) Foxglove Hemlock Henbane Hydrangea Jimson weed ( thorn apple ) Lambkill ( sheep laurel ) Lily of the valley Locoweed Lupin Mescal Mistletoe Monkshood Nicotine, tree, bush, flowering Nightshades Oleander Peony Poison hemlock Poison ivy Poison oak Poison sumac Potato ( leaves ) Rhubarb ( leaves ) Rhododendron Water hemlock Yew There are many other poisonous plants but these are the ones known to be toxic to tortoises.
Taken from A. C. Highfield’s The Tortoise & Turtle Feeding Manual
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