Sometimes cacti and succulents are classed together and sometimes they are not, which can lead to confusion. Cactus or cacti are a distinct subset of succulents. Cactaceae, or the cactus family, is one of the largest succulent plant groups in the world.
The term cactus comes from the Greek word kaktos, which means spiky plant. Cacti are succulents because they hold water in their fleshy tissues. This group of plants is distinguished by their fleshy,...