Should all hydrangeas be cut back in the fall?

Answered by Antonio Sutton

As an AI language model, I don’t have personal experiences or emotions, but I can provide you with a detailed answer to your question.

When it comes to pruning hydrangeas, it is important to understand the specific type of hydrangea you have in order to determine the best time and method for pruning. Different hydrangea varieties have different growth habits and bloom on either old wood or new wood.

1. Hydrangeas that bloom on old wood: These varieties produce flower buds on the previous year’s growth. Examples include the bigleaf hydrangea (Hydrangea macrophylla), oakleaf hydrangea (Hydrangea quercifolia), and climbing hydrangea (Hydrangea anomala petiolaris). Pruning these hydrangeas in the fall can remove next year’s flower buds, resulting in little or no blooming the following season. It is generally recommended to prune these hydrangeas immediately after they finish blooming in the summer.

2. Hydrangeas that bloom on new wood: These varieties produce flower buds on the current year’s growth. Examples include the panicle hydrangea (Hydrangea paniculata) and smooth hydrangea (Hydrangea arborescens). Since the flower buds form in spring, pruning these hydrangeas in the fall won’t affect next year’s blooms. However, they can be pruned in late winter or early spring before new growth emerges if desired.

It’s worth noting that most hydrangeas don’t require extensive pruning and can be left unpruned if they are growing well and in the desired shape. Pruning should generally be done to remove dead or damaged wood, control the size or shape of the plant, or rejuvenate an overgrown hydrangea.

Here are some additional pruning tips for hydrangeas:

– Deadheading: Removing spent flowers can improve the overall appearance of the plant and encourage additional blooms. This can be done throughout the blooming season for varieties that produce multiple flushes of flowers.

– Removing dead or damaged wood: In late winter or early spring, inspect your hydrangea for any dead or damaged wood. Prune back to healthy tissue, just above a pair of healthy buds or a dormant bud.

– Rejuvenation pruning: If your hydrangea has become overgrown and is not blooming well, it can be rejuvenated by selectively removing older stems. This can be done in late winter or early spring, cutting back up to one-third of the oldest stems near the base of the plant. This encourages new growth and can result in a healthier, more vigorous plant.

Not all hydrangeas need to be cut back in the fall. It depends on the specific variety and whether it blooms on old wood or new wood. Understanding the growth habits of your hydrangea will help you determine the best time and method for pruning to ensure optimal blooming.