Crassula can be found in succulent nurseries near you. Mother nature will provide the watering requirements for the plants in winter. But, it is important to water them well during the warmer months. It's drought-tolerant once established and 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.