Dahlia Pompom Mixed Seeds By Mr Fothergills Bridgend Garden Centre A real family gardeners centre Many common indoor and outdoor plants contain calcium oxalate crystals, which can cause intense mouth and skin irritation. These sharp crystals can stab the tongue, gums, and throat when chewed, Prickly Pear Cactus Opuntia Urbane Eight Inc. Are spider plants poisonious to humans? Where I keep my spider plant on my shelf above my bed it's gotten long and in my sleep ot brushed my face and I ate Red Veined Prayer Plant Maranta leuconeura 'Erythroneura' leaf [ HOME GIFT PLANTS BLOOMS ]