Crassula can be found in succulent nurseries near you. While mother nature might provide water during winter, you will need to water the plants frequently in hotter months. Once established, it is drought-tolerant and only requires minimal care. Overwatering doesn't refer to the amount of water you give your succulents. It's more about how often you water them. The key difference between water roots (or soil roots) is that you put the succulents directly into the soil. They need to be watered when necessary, unlike the water roots.