1、 What kind of fertilizer

It is best not to fertilize azalea during flowering, because if it is not well controlled, it will shorten the flowering time and may fall buds. Before it blooms, it needs to apply some phosphorus and potassium fertilizer, and the nutrients before flowering can meet the flowering of the plant, so try not to apply fertilizer during the flowering period. However, nutrients should be replenished as soon as possible after flowering

During the flowering period, not only do not apply fertilizer, but also do not spray water on the flowers, which will also cause flower senescence. Sometimes, the plant will grow vigorously and may grow many flower buds. The flower buds with weak growth can be properly trimmed

2、 Can you spray potassium dihydrogen phosphate

The Rhododendron can be sprayed with potassium dihydrogen phosphate, which can promote its better flowering, help the healthy growth of branches, and prolong the flowering period to a certain extent. When using, it should be noted that it is better to use it when pregnant, but not in rainy days or when the sun is strong. It can be used before 10 a.m. or after 4 p.m

3、 Precautions for fertilization

When fertilizing Rhododendron, do not use thick fertilizer, but apply thin fertilizer. In addition, the amount of fertilizer should not be too large. Whether it is concentrated fertilizer or large amount, it will burn the root system of the plant