1, enucleation: When hydrangea is still in seedling stage, enucleation is needed. Usually when it grows to about 15cm, you can cut off the upper part with a sterilized blade.
2. Residual flowers: After flowering, plants need to be pruned from the position below the flower head to make the plant shape more tidy.
3. Old branches: The length of old branches after growing for several years should be cut off by about 1/3. Only when the old branches are cut off will it grow more new branches.
4. Miscellaneous branches: There will be many cross branches and overlapping branches on the plant. It is necessary to cut off the overlapping weak branches and keep the strong branches, so that the plants will be more ventilated and grow better.