Reasons and solutions for hydrangea not blooming

Hydrangea is loved by many flower lovers for its luxuriant flowers, but sometimes hydrangeas do not show any signs of blooming, which may confuse many flower lovers. Learn below the reasons and solutions for hydrangea not blooming.

1. Improper pruning

Many hydrangea varieties, including the popular 'Endless Summer,' bloom on old growth branches. If you prune incorrectly, you may end up with fewer flowers or a delayed flowering period. The correct time to prune is usually to avoid pruning after August to ensure that the branches growing that year can age and prepare for flowering next year. Prune promptly after flowering and retain the side buds that grow subsequently. These side buds will stop growing in autumn and form flower buds from the top in the spring of the following year.

2. Indoor temperature is too high in winter

Hydrangeas need a low temperature period in winter to promote flower bud differentiation. If the indoor temperature is too high, causing the hydrangea to continue growing, the branches will remain light green, which is not conducive to flowering. It is recommended to place hydrangeas in a cooler place, such as by a window or in a hallway, to encourage them to enter a dormant state. Most hydrangea varieties can survive the winter safely as long as the temperature does not drop below minus ten degrees Celsius.

3. Lack of antifreeze measures

Although hydrangeas are relatively cold-tolerant, extreme low temperatures can still damage the plants. If the winter temperature in your area is below minus ten degrees Celsius, it is recommended to take protective measures for ground-planted hydrangeas, such as covering them with non-woven bags or plastic bags to prevent the branches from freezing and affecting flowering next year.

4. Insufficient light

Hydrangeas love light, and even if they are shade-tolerant, they still need plenty of light, especially in spring and autumn. Insufficient light will cause the branches to grow thin and weak, affecting aging and flower bud formation. It is recommended to ensure that hydrangeas receive sufficient light in spring, autumn and winter, and provide appropriate shade in summer to avoid heat damage.

The above points are the key factors affecting the flowering of hydrangea. During the maintenance process, avoiding these problems reasonably can ensure the healthy growth and flowering of hydrangea.