Ist die Monstera giftig fr Katzen? Monstera Leaf Foiled Print Cobalt Blue 8.5x11 in Dieffenbachia and Philodendron Poisonous Plants Dieffenbachia and Philodendron are both considered poisonous plants, especially to humans and pets like cats and dogs. Dieffenbachia (a.k.a. Dumb Cane) Toxic Parts: All parts of Monstera Deliciosa are relatively easy to grow from seed, as long as you give them the correct setup! The really tricky part is keeping the seeds fresh, so anytime you order the seeds, make sure to