My Hydrangeas Only Bloom Every Other Year—Why Is That?

The most common cause of hydrangeas not blooming is improper pruning, which can be caused by various factors such as lack of sun and lack of time. To troubleshoot hydrangea issues, it is essential to determine the type of hydrangea you are growing and determine if it blooms exclusively in mid- to late summer. Incorrect pruning can lead to bud damage due to winter or early spring weather, location, and too much fertilizer.

Hydroponic pruning can also be a culprit, as many hydrangeas bloom on old wood, while new wood is next year’s growth. It is best to leave the hydrangea alone and let new growth appear on the dead wood. Additionally, excessive shade can prevent hydrangeas from forming flower buds, and all hydrangea blooms or “heads” could be affected by overhead watering, especially during a hot summer.

To prevent hydrangeas from blooming, it is crucial to avoid extreme heat, drought, or excessive sun exposure. Instead, leave the hydrangea alone and allow new growth to appear on the dead wood. Overhead watering can also affect hydrangea blooms, so it is essential to deadhead some of the deadwood to ensure proper growth.

In conclusion, improper pruning, lack of sun, and time are common reasons for hydrangeas not blooming. To prevent these issues, it is essential to identify the type of hydrangea you are growing and follow proper care tips.