Thripse Gesal Brown edges on Monstera leaves are common. But they're rarely random. Often it's your plant quietly responding to something in its environment. Here are four things worth checking: The Best Philodendron for Terrariums (& the Ones to Avoid) Terrarium Tribe Cat owners, check your houseplants! Many common plants found in homes can be toxic to cats if chewed or eaten. Curious kitties love to explore, and even a small nibble of