Is It Better to Prune Hydrangeas in Fall or Spring?
Hydrangeas are a beautiful and popular flowering shrub that can add a touch of elegance to any garden. However, they can also be a bit tricky to prune, and the timing of your pruning can make a big difference in the health and appearance of your plants.
So, when is the best time to prune hydrangeas? Fall or spring?
The answer depends on the type of hydrangea you have.
Pruning Hydrangeas in Fall
Fall pruning is best for bigleaf hydrangeas (Hydrangea macrophylla), which bloom on old wood. This means that the flower buds for next year’s blooms are formed on the stems that grew this year. If you prune these stems in the spring, you will remove the flower buds and reduce the number of blooms you get next year.
Fall pruning should be done after the leaves have fallen and the plant is dormant. Cut back the stems to about 6-12 inches above the ground. You can also remove any dead or diseased stems at this time.
Pruning Hydrangeas in Spring
Spring pruning is best for panicle hydrangeas (Hydrangea paniculata) and smooth hydrangeas (Hydrangea arborescens), which bloom on new wood. This means that the flower buds for next year’s blooms are formed on the stems that will grow next year.
Spring pruning should be done before new growth begins. Cut back the stems to about 6-12 inches above the ground. You can also remove any dead or diseased stems at this time.
Which Type of Pruning Is Best for You?
If you have bigleaf hydrangeas, it is best to prune them in the fall. This will help to ensure that you get the most blooms next year.
If you have panicle hydrangeas or smooth hydrangeas, you can prune them in either the fall or the spring. However, spring pruning is generally preferred for these types of hydrangeas because it helps to promote bushier growth.
Other Pruning Tips
- When pruning hydrangeas, always use sharp, clean pruning shears. This will help to prevent the spread of disease.
- Make your cuts at a 45-degree angle. This will help to prevent water from collecting on the cut stems and causing decay.
- Remove any suckers that grow from the base of the plant. Suckers are small, weak stems that can rob the plant of energy.
- Fertilize your hydrangeas regularly to help them grow healthy and strong.
Questions and Answers
Q: Can I prune my hydrangeas in the summer?
A: It is not recommended to prune hydrangeas in the summer. This can damage the plant and reduce the number of blooms you get next year.
Q: How often should I prune my hydrangeas?
A: Hydrangeas should be pruned once a year, either in the fall or the spring.
Q: What are the signs of over-pruning hydrangeas?
A: Signs of over-pruning hydrangeas include stunted growth, few or no blooms, and yellowing leaves.
Q: What should I do if I over-prune my hydrangeas?
A: If you over-prune your hydrangeas, do not panic. The plant will likely recover, but it may take some time. Water the plant deeply and fertilize it regularly to help it recover.
Q: Can I prune hydrangeas that are not blooming?
A: Yes, you can prune hydrangeas that are not blooming. However, it is important to identify the type of hydrangea you have and prune it at the correct time of year.
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