It is better not to fertilize the azaleas during the flowering period, because if not well controlled, it will lead to a shorter flowering time and the possibility of falling buds.Before it blossoms, it needs to apply some phosphorus and potassium fertilizers, and the nutrients before flowering can already satisfy the flowering of the plant, so it is not fertilized as far as possible in the flowering period.However, nutrients should be replenished as soon as possible after flowering.
During the flowering period of the plant, not only do not fertilize, but also do not spray water on the flowers, which will also cause the flowers to fade.Sometimes, the plant will grow more vigorously, may grow a lot of buds, for the weaker buds can be properly pruned.
Potassium dihydrogen phosphate can be sprayed on azaleas to promote better flowering, help the healthy growth of branches, and prolong the flowering period to a certain extent.When using it, we should pay attention to the use of pregnant buds, but not in rainy days, nor in strong sunshine.The time of use can be selected before 10 A. M. or after 4 P. m.
When fertilizing rhododendrons, do not use thick fertilizer, should apply thin fertilizer.Moreover, the amount of fertilizer can not be too large, whether it is thick fertilizer or large amount, will burn the root system of the plant.