Fertilization for crabapple flowers is generally 3-4 times a month, do not fertilize at high temperatures. Nitrogen fertilizer can be applied more during the seedling period, a small amount of multiple times, and the fertilization during the growth period can be more frequent. The fertilization during the gestation period should be mainly phosphate fertilizer and potassium fertilizer. Phosphate fertilizer can be applied from April to May, and the amount of fertilizer should be controlled in summer and winter, and fertilization should be stopped gradually. Do not splash on the leaves when fertilizing, and water less after fertilization.

One. Fertilization time

Don't fertilize the crabapple too frequently, just 3-4 times a month. As long as the fertilizer is not applied at high temperature, it can be carried out at any other time. Because when fertilizer is applied in hot weather, it is easy to cause fertilizer damage and the root system will rot after the fertilizer enters the pot soil due to the high heat.

Two. Fertilization method

1. Fertilization methods at different growth stages: When the plant is in the seedling state, nitrogen fertilizer should be applied to it to help the growth of branches and leaves. During the growth period, it should be applied in a small amount and many times, and do not apply high-concentration fertilizer. During the growth stage of flower buds, more phosphorus and potassium fertilizers should be used, which can help flower buds grow and bloom more and more brilliantly.

2. Fertilization methods in different seasons: apply some phosphate fertilizers to it during the spring months from April to May; the amount of fertilizer applied during the period of vigorous plant growth should be sufficient; the amount of fertilizer applied in summer and winter should be small, and fertilization can also be stopped gradually.

Three, matters needing attention

Don't let the fertilizer touch its leaves when fertilizing it. It is easy to burn the leaves of the plant. Appropriate watering after fertilization can help to better exert fertilizer efficiency and reduce the probability of fertilizer damage.