When applying fertilizer to hibiscus flowers, apply thin fertilizer frequently, apply a small amount of fertilizer every other week, and then increase the number of fertilization.

Zhu Jin: Also known as Fusang, Hibiscus and Rose. Because the color is mostly red, it is commonly known as the big red flower in Lingnan area of China. Evergreen shrubs; Branchlets cylindrical, sparsely stellate pilose. The leaves are broadly ovate or narrowly ovate, and there is no hair on both sides except that the back is a little sparse along the veins. Flowers solitary in the axils of upper leaves, usually pendulous.