Why is it important to take care of a succulent. Succulents need very little fertilizer. However they do require light feedings during the spring and summer to grow and stay happy. Your plant will begin to grow during the spring season. Just be sure to keep in mind that compost is not necessary for healthy Lithop growth. All succulents are designed to take advantage of environments where little water is provided, making sparse watering necessary. Dormancy in winter means that you should water your succulents less often. Succulent rosettes will become tighter if there is too much sun.