5 Fascinating Things You Didn't Know About Cacti

Cacti are weird plants when you stop to think about it. They don't look particularly lush, like most other houseplants, and their stark appearance makes them feel a bit alien. In fact, they've been residents of planet earth for 35 to 40 million years, far longer than humans, and they're a fascinating species. Here are five cool cacti facts that will make you look super knowledgeable when you tell your friends.