Fertilization of hibiscus is mainly based on different growth periods, applying appropriate amount of fertilizer to promote nutritional growth. In early spring, when the branches begin to sprout, topdressing should be done in time, mainly with quick-acting fertilizer to promote nutritional growth; Topdressing 1-2 times phosphorus and potassium fertilizer before budding to promote plant budding; Weeding and fertilizing twice at flowering stage, mainly with phosphorus and potassium fertilizer, supplemented by nitrogen fertilizer, can increase the number of flowers and maintain the growth form of the whole plant.

After all hibiscus flowers wither, in addition to pruning in time, storing energy for overwintering and proper fertilization, ditches or pits should be dug around the plants, with farmyard manure as the main ingredient and appropriate inorganic compound fertilizer as the supplement, so as to supply the nutrients needed for next year's growth and flowering.