Succulent Gardens also offers an extensive selection of wreaths and planters, in addition to their vast variety of plants. Peanut Cactus grows in clumps so they are great for hanging planters or ground cover. Pincushion Cacti - These are the most commonly grown cactus and grows quickly so it's a good choice for beginners. It was difficult to get my finger away from the cactus. Use a pair or tweezers to remove any protruding parts. You can read our article about when to water succulents. It will teach you how to properly water your plants and prevent this from happening again.