Hydrangea is a kind of fertilizer loving flower. During its growth, its fertility must be sufficient.
When applying fertilizer to Hydrangea, it is generally based on organic fertilizer, and some compound fertilizer can be used. During the growth period of Hydrangea, it is possible to apply a thin fertilizer water which is rotten every half month. During this period, fertilization is mainly based on the application of nitrogen fertilizer, such as bean cake, compound fertilizer or human and animal manure, etc., which can be used.
For the healthy growth of Hydrangea, sometimes you need to apply some foliar fertilizer, spray some urea or ferrous sulfate solution.
When the flowering period of Hydrangea is coming, in order to make it bloom more beautiful flowers, in the flower bud differentiation period and flower bud formation period, you can apply more phosphate and potassium fertilizer, or you can spray potassium dihydrogen phosphate on the leaf surface. When the flowers are going to open, we need to stop fertilizing
In fertilization, we need to pay attention to two aspects.
First, fertilization needs to be based on the climate, in the hot summer, do not use cake fertilizer and other fertilizers on the hydrangea, because fertilization at this time, it is easy to see the root burning phenomenon of Hydrangea, it is easy to cause diseases and insect pests.
Second, when the hydrangea opens an account, its color will be affected by the pH value of the soil. Generally, when the soil is acidic, the flowers will turn blue, and when the soil is alkaline, the flowers will turn red. If you want to open blue flowers, you can apply some aluminum sulfate in the flowering period of Hydrangea, if you want to open red flowers, you can add some lime in the soil.
