Crassula plants may also be carried by succulent nursery owners. Mother nature will provide the watering requirements for the plants in winter. But, it is important to water them well during the warmer months. Once established, the succulents can tolerate drought and only require minimal attention. Remember, overwatering is not about the quantity of water you give your succulents, it's about the frequency. 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.