How to fertilize hibiscus

Fertilization method during repotting and pruning

Loose, fertile sandy loam should be used as the soil for potted plants. The pots should be changed before moving outdoors in early spring in April every year. When fertilizing hibiscus, three things should be done when repotting: first, replace the culture soil with new one; second, cut off some of the dense and curled fibrous roots; third, apply enough base fertilizer and add a little phosphorus fertilizer to the bottom of the pot. In order to maintain the beautiful shape of the tree and the abundance of flowers, according to the characteristics of hibiscus' strong ability to branch and sprout, it can be pruned and shaped before and after leaving the house in early spring. Except for leaving 2-3 buds at the base of each branch, all the upper parts should be cut off. Pruning can promote the growth of new branches, the growth will be more vigorous, and the plant shape will also be beautiful. After pruning, water and fertilizer should be controlled appropriately because the consumption of the above-ground part is reduced.

Fertilization after leaving the house

Hibiscus is a positive tree species and should be moved outdoors and placed in a sunny place in early May. This is also the growing season of Hibiscus and management work such as fertilizing, watering, loosening the soil, and weeding should be strengthened. Apply thin liquid fertilizer every 7-10 days, and watering should depend on the dryness or wetness of the soil in the pot. Too dry or too wet will affect flowering. Management after autumn should be cautious, and attention should be paid to applying less fertilizer in the later period to avoid the growth of autumn shoots. The autumn shoots are young and tender, with weak resistance to cold, and will be damaged by frost in cold weather.

Fertilization after entering the room

Hibiscus cannot tolerate frost and must be moved indoors to keep warm between the beginning of winter and the beginning of frost. The wintering temperature should not be lower than 5℃ to avoid frost damage; and not higher than 15℃ to avoid affecting dormancy. If dormancy is not good, growth and flowering will not be vigorous the following year. Any south-facing furniture house with good insulation conditions can overwinter. When the weather is cold, it can be covered with paper or plastic film to keep warm. When moving indoors for the first time, open the windows for ventilation during the day, pay attention to the changes in the wetness of the potting soil, and water appropriately. On the coldest days, watering can help prevent frost damage, but fertilizing should be stopped.