A succulent nursery may have Crassula seed stock. While mother nature might provide water during winter, you will need to water the plants frequently in hotter months. Once established, the succulents can tolerate drought and only require minimal attention. Overwatering does not refer to how much water you give your succulents. Instead, it is about how frequently they are watered. A major difference between water roots and soil roots is that you are directly placing the succulents into the soil and watering them when needed as opposed to the water roots, which are constantly in water.