The reason why hydrangea does not blossom

1. Increase light

1, the reason: hydrangea like a little cool environment, but to ensure that the light is enough. If the light is insufficient, it will make it easy to grow, and finally let the leaves grow too large, the growth will be affected, and the leaves consume too much nutrients, which will greatly affect the formation of flower buds, resulting in it not flowering.

Solution: Move it to a place with plenty of light, especially in winter. In spring and autumn, it can be irradiated with scattered light.

Second, reduce the light time

1, the reason: sometimes because it has been placed indoors at night by the light, it will let the light time is too long, affecting the differentiation of flower buds, thus affecting flowering.

2, solution: in flower bud differentiation, can not give it too long light, every day in 10 hours or less, so that it can promote flowering.

III. Correct pruning

1. Reason: Hydrangea flowers generally bloom on the old branches. If the old branches are not pruned, it will affect the flowering of the next year.

2, solution: after it failed last year, to cut off the residual flowers, and ensure that there are 3 to 4 buds on each branch, other branches can be cut off, the best time before the end of August.

IV. Reduce the temperature

1, the reason: a lot of hydrangea, they like to stay in a lower temperature environment before flowering, if the temperature is higher than 10 degrees, it will affect the flower bud differentiation, resulting in it can not bloom.

Solution: When it begins to differentiate flower buds, put it in an environment with a temperature below 10.

5. Reduce nitrogen fertilizer

Reason: Although it likes fertilizer very much, if it is not applied properly, it will affect its flowering, especially when there is too much nitrogen fertilizer, it will have the opposite effect.

2. Solution: After flowering every year, apply less nitrogen fertilizer, and then mainly phosphorus and potassium fertilizer, so that it can bloom early.