What are the reasons hydrangeas do not bloom?
Hydrangea, also known as eight-immortal flower and purple sun flower, has large and full blooms. Its colors are changeable and its ornamental value is extremely high, and summer is exactly its blooming season, but friends who grow it find that the hydrangea they cultivate does not bloom. So what is going on here? Let's take a look together.
1. Flowering conditions not met
Generally speaking, hydrangeas bloom on old wood. This is because the flower heads of hydrangeas are huge, and the newly grown tender branches cannot support the flower heads, so you have to wait until the branches are old and mature before they have enough strength to hold up the flower heads. If it is a seedling just newly bought, then it cannot bloom that same year, and you need to take good care of it, waiting until the next year for it to bloom.
2. Improper lighting
Hydrangea is a short-day plant, and it needs to maintain more than 10 hours without light each day, and only after about 6 weeks can flower buds form. If it is kept in an environment with sufficient light for a long time, it will fail to bloom. To make it bloom, first subject it to 6-8 weeks of cool conditions, then place it in an environment of around 20 degrees to force flowering. When the inflorescence is visible, lower the temperature to around 16 degrees, and maintain this for 2 weeks to bloom.
3. Improper watering
When watering hydrangeas, be careful not to pour water onto the leaves, especially for hydrangeas that have already formed buds and are blooming. If water is poured on them, it will cause the flower buds to fall off and result in flowering failure. So when watering hydrangeas, be careful, and it is best to water slowly along the edge of the pot until water leaks out from the bottom of the pot.
4. Improper pruning
Hydrangeas need timely pruning during cultivation. If they are not pruned, it is also very easy to cause them not to bloom. Generally, after the flowers fade, the branch tips need to be cut off in time to encourage new branches to grow. When the new branches grow to about 10 cm, shorten them again. By pinching off the tops to inhibit the plant's vegetative growth, this encourages more side branches to develop and flower buds to form.
The above is an introduction to why hydrangeas do not bloom. I hope it can help you. If you want to learn more related knowledge, please keep following us.