53. Philodendron and Swiss Cheese Plants

Looking for some plants to spruce up your home? Well, a Swiss cheese plant — whose more formal name is the Latinate Monstera deliciosa — or indeed a philodendron might seem like ideal picks at first. Yet these bits of greenery aren’t as innocent as they appear. Website Real Simple reported that their makeup includes calcium oxalate crystals. Now, such toxins won’t harm your mitts, but you can accidentally transfer them to your mouth. Should that happen, you’ll be sore for a bit.