Incrediball hydrangea flowers on new wood, so late-winter pruning keeps the plant compact without sacrificing blooms. If you have been searching for how to prune incrediball hydrangea correctly, you have come to the right place. This guide will show you exactly when to cut, where to cut, and how much to remove for the best possible show of giant white flowers.
Unlike some fussy hydrangeas, the Incrediball is a tough customer. It is a smooth hydrangea, which means it is very forgiving. You do not need to be a master gardener to get this right. A simple set of pruners and about fifteen minutes is all it takes.
Why Pruning Matters For Incrediball
Pruning is not just about making the plant look neat. It is about controlling the size and encouraging strong stems. The Incrediball is known for its massive, dinner-plate sized blooms. If you leave the plant alone, the stems can get tall and floppy. The weight of the flowers can cause the branches to bend all the way to the ground.
By cutting the plant back hard, you force it to produce new, thick stems. These new stems are much better at holding up the heavy flowers. Think of it as a reset button. You are trading a tall, messy plant for a shorter, sturdier one.
Understanding The Growth Cycle
This is the most important concept to grasp. The Incrediball sets its flower buds in the spring on the current season’s growth. This is called “new wood.” The buds do not form on the old stems from last year. This means you can cut last year’s growth all the way down without worrying about losing flowers.
If you prune in the fall or winter, you are removing old wood. That is fine. The plant will wake up in the spring and push out fresh growth. That fresh growth will be the one that blooms for you in July and August.
How To Prune Incrediball Hydrangea
Now we get to the actual process. The best time to do this is in late winter or very early spring. You want to do it while the plant is still dormant. Look for the buds on the stems to be slightly swollen but not yet leafing out. This is the perfect window.
Here is the step-by-step method for a full rejuvenation prune. This is the most common method and it works wonders.
- Gather your tools. You will need a sharp pair of bypass pruners. For thicker, older stems, you might need loppers. Make sure the blades are clean. You can wipe them with rubbing alcohol to prevent spreading disease.
- Identify the base. Look at the base of the plant. You will see multiple stems coming out of the ground. Some might be thick and woody, others thinner.
- Cut it down. The simplest method is to cut the entire plant down to about 12 to 18 inches from the ground. Make your cuts just above a set of healthy buds. This is a hard prune, but it is exactly what the plant wants.
- Remove dead wood. If you see any stems that are completely dead, brittle, or broken, cut those off at the base. They will not produce new growth.
- Clean up. Rake up the cuttings and dispose of them. Leaving them on the ground can harbor pests.
Alternative Pruning Methods
You do not always have to cut the plant down to the ground. There are other ways to prune, depending on your goals.
Selective Pruning For Height
If you want a taller plant, you can do a selective prune. Instead of cutting everything down to 12 inches, you cut the stems back by one-third to one-half. This removes the old flower heads and some of the stem length. The plant will still grow new wood, but it will start from a higher point. This results in a taller shrub overall.
Deadheading Spent Blooms
You can deadhead the spent flowers in late fall or early winter. However, many gardeners like to leave the dried blooms on the plant for winter interest. The dried brown heads can look pretty with frost on them. If you do leave them, they will be removed in the spring when you do your main prune.
Renewal Pruning For Old Plants
If you have a very old, neglected Incrediball, you might want to do a renewal prune. This is done over a three-year period. Each year, you remove one-third of the oldest, thickest stems at the base. This encourages new growth from the roots while keeping the plant looking full.
Common Pruning Mistakes To Avoid
Even though this plant is forgiving, there are a few things you should not do. Avoiding these mistakes will keep your hydrangea looking its best.
- Pruning in the summer. If you cut the plant back in the summer, you are removing the new wood that is about to bloom. You will lose the flowers for that year.
- Pruning too late in the spring. If you wait until the leaves are fully out, you might accidentally cut off the new flower buds. It is better to prune before the plant breaks dormancy.
- Being too timid. Do not be afraid to cut the plant down. It will not kill it. In fact, it will thank you with bigger blooms. Cutting it too lightly can lead to weak, floppy stems.
- Using dull tools. Dull blades can crush the stems instead of cutting them cleanly. This makes the plant vulnerable to disease.
What About Fall Pruning?
You might be tempted to clean up the garden in the fall. You can remove the old flower heads if you want. But it is better to wait. Leaving the stems and blooms in place during winter provides some protection for the crown of the plant. It also adds texture to your winter landscape. The ideal time is definitely late winter or early spring.
Tools You Will Need
Having the right tools makes the job easier and safer for the plant. You do not need a lot of expensive equipment.
- Bypass Pruners: These are the standard hand pruners. They have two curved blades that pass by each other, like scissors. They are perfect for stems up to 3/4 inch thick.
- Loppers: These have long handles and are used for thicker branches. They give you more leverage.
- Pruning Saw: For very old, thick stems, a small pruning saw might be necessary.
- Gardening Gloves: To protect your hands from scratches.
How To Care For Your Plant After Pruning
Once you have finished pruning, your job is not quite done. A little aftercare will help the plant bounce back quickly and produce those massive blooms.
First, give the plant a good drink of water. Even though it is dormant, it needs moisture. Second, add a layer of mulch around the base. This helps retain moisture and keeps the roots cool. You can use shredded bark, leaves, or compost.
In the spring, you can apply a slow-release fertilizer. Look for a fertilizer formulated for shrubs. Follow the instructions on the package. Do not over-fertilize, as this can lead to lots of leaves and few flowers.
Why Your Incrediball Might Not Be Blooming
If you are pruning correctly and still not getting flowers, there might be another issue. Here are a few things to check.
- Too much shade. Incrediball hydrangeas need at least 4 to 6 hours of direct sun. If they are in full shade, they will not bloom well.
- Late frost damage. If you prune early and a hard frost hits, it can kill the new buds. This is why it is often safer to wait until late winter or early spring.
- Too much nitrogen. High-nitrogen fertilizer promotes leaf growth at the expense of flowers. Use a fertilizer higher in phosphorus.
- Deer or rabbit damage. These animals might be eating the new growth in the spring.
Pruning For Shape And Size Control
Many people plant Incrediball hydrangeas in a spot where they do not have a lot of room. If your plant is getting too big for its space, the hard prune is your best friend. By cutting it down to 12 inches, you are essentially keeping it at a manageable size. The plant will grow back to about 3 to 4 feet tall and wide. If you want it smaller, you can prune it again lightly in the early summer, but this might reduce the number of blooms.
Frequently Asked Questions
Here are some common questions people have about pruning this specific hydrangea variety.
Can I cut my Incrediball hydrangea to the ground?
Yes, you can. Cutting it down to 12 to 18 inches is a common and effective practice. It will regrow vigorously in the spring. This is the best way to get a full, compact plant with large flowers.
What happens if I do not prune my Incrediball hydrangea?
The plant will still bloom, but the stems will get taller and weaker. The large flowers will cause the branches to droop and flop over. The plant will look messy and unkempt. Pruning keeps it sturdy and attractive.
Is it okay to prune Incrediball hydrangea in the fall?
It is not recommended. Pruning in the fall can stimulate new growth that will be killed by winter frost. It is much better to wait until late winter or early spring when the plant is still dormant.
How much can I cut back an Incrediball hydrangea?
You can cut it back by up to two-thirds of its size without harming it. The most aggressive method is to cut it down to about 12 inches from the ground. This is a very hardy plant that responds well to hard pruning.
Do I need to deadhead Incrediball hydrangeas?
Deadheading is optional. If you want to keep the plant tidy, you can remove the spent blooms. However, many people leave them for winter interest. The old blooms will be removed during the main pruning in late winter anyway.
Final Tips For Success
Pruning your Incrediball hydrangea is one of the simplest gardening tasks you can do. The key is timing. Wait for the late winter or early spring window. Grab your pruners and cut it down. Do not overthink it.
Remember that this plant is a “new wood” bloomer. That is the secret to everything. As long as you prune before the new growth starts, you will be fine. The plant will reward you with an incredible display of white flowers that last for months.
One last tip: if you live in a colder climate, you might want to wait until very early spring to prune. This protects the crown of the plant from extreme cold. In warmer climates, you can prune in late winter.
So, go out there and get to work. Your hydrangea will thank you for it. With just a little bit of effort, you will have a stunning, healthy shrub that is the envy of the neighborhood. The giant, snowball-like blooms are worth every second you spend with your pruners.
I hope this guide on how to prune incrediball hydrangea has been helpful. It really is a simple process once you understand the growth habit. Happy gardening, and enjoy your beautiful blooms this summer. The crisp white flowers are a fantastic addition to any landscape, and they make excellent cut flowers for indoor arrangements too.