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How to Prune Your Hydrangea

How to prune all the different types of Hydrangeas.

Contributors: Ryan McGrath

You prize your hydrangeas for their beautiful flowers. You also want to make sure you prune them at the right time to encourage the stunning blooms every season. But do you wonder whether or when to prune them?

“The first step is to determine the variety of your hydrangea,” said Tim Wood, new product manager at Proven Winners ColorChoice. “This is fairly easy to do. If your plant produces big pink or blue flowers, it is a Hydrangea macrophylla. If its flowers are round and white—or pink in the case of the new Invincibelle Spirit—the plant is a Hydrangea arborescens. Finally, if the plant has large, conical flowers, which are often white but may also be green or pink, you own a Hydrangea paniculata.”

Bigleaf Hydrangeas

If you have Hydrangea macrophylla, also known as Bigleaf Hydrangea, Wood says you can relax. This plant requires little more than a trimming and only immediately after flowering. You should never prune it in winter or spring, because it sets flower buds the year before and if you shear it back, then you will cut off all of summer’s flowers.

Newer reblooming varieties such as the Let’s Dance® series from Proven Winners® ColorChoice® will also bloom on the current season’s growth, but you still want to leave the plant intact through spring so you can enjoy early summer flowers.

Smooth Hydrangeas

Hydrangea arborescens, also known as Smooth Hydrangea, are beloved for their adaptable nature and reliable blooms. You should prune it back in late winter or early spring. These hydrangeas bloom on “new wood”—the current season’s growth. Pruning them back at that time encourages new growth, which produces flowers. Spring pruning will also result in a fuller, stronger plant that’s less likely to flop under the weight of its abundant summer flowers. Cutting the stems back to one or two feet will leave a good framework to support the blooms.

Today, there are two new “Annabelle” Hydrangea arborescens with stronger stems, so they won’t flop after being established. Invincibelle® Spirit II Hydrangea is the very first pink-flowered form of “Annabelle.” Invincibelle® Spirit II continues to produce new pink flowers right up until frost, providing a beautiful display across several seasons in your garden, from mid-summer to fall. Incrediball® Hydrangea has the biggest flowers and the strongest stems of any of the “Annabelle” hydrangeas. Incrediball® produces incredibly large white blooms as big as a basketball. 

Hardy Hydrangeas

Hydrangea paniculata, sometimes called Hardy Hydrangea, also blooms on new wood. You should prune it back in late winter or early spring. You can cut it back to the ground or, if you want slightly taller plants, cut it back to one to three feet. This is a great job for one of those early spring days when everything is still dormant but it’s so beautiful and warm you need to be in the garden.

A new variety of Hydrangea paniculata won’t require as much pruning to keep it smaller. The new Little Lime Hydrangea boasts the same colors and benefits of the famous 'Limelight' Hydrangea though only reaching three to five feet fully grown. At one-third the size of other hardy hydrangeas, it fits well into practically any landscape. Little Lime produces bright cone-shaped lime-green flowers, later turning into pink, from mid-summer to frost.

Fortunately, even if you make a mistake and prune at the wrong time of year, these plants will forgive you. You may not have flowers for a season but, with proper timing, you’ll see them the following year. Just remember to start by correctly identifying which kind of hydrangea you have. With just a little work, you’ll get beautiful flowers from your hydrangeas year after year.

For general information on pruning other types of flowering shrubs, click this link.

Incrediball® Hydrangea arborescens 'Abetwo' USPP20,571, CPBRAF; Invincibelle® Spirit II Hydrangea arborescens 'NCHA1' PP: 20765 Can. COPF; Little Lime Hydrangea paniculata 'Jane' USPPAF, Can. 3914; 'Limelight' Hydrangea paniculata USPP12,874, Can. 2319;

244 Readers Rated This: 12345 (3)
Anonymous's picture
Anonymous Wed, 09/06/2017 - 4:09pm

This year myLimelights produced very tall enter branches that flowered and the lower branches with flowers tended to droop toward the ground. I pruned them this spring. How can I prune to regain the bushy shape?

Stacey Hirvela's picture
Stacey Hirvela Wed, 09/13/2017 - 12:03pm

The best way to prune panicle hydrangeas like Limelight is to cut each branch back by about one-third its total length. That ought to do the trick.

Anonymous's picture
Anonymous Sat, 08/26/2017 - 2:14pm

I have 3 Limelight hydrangea shrubs that are 2 yrs old. Last winter I pruned them down to about 1 1/2 ft high. This Spring/Summer they exploded to about 6 ft high with very large blooms and drooping branches. They look out of control! What can I do to fix the problem?
Thank you!

Stacey Hirvela's picture
Stacey Hirvela Wed, 09/13/2017 - 12:06pm

This is a common plant response to severe pruning - to avoid it happening again, simply don't cut them back that severly. As a general guideline, plan to cut plants back by about one-third their total height each year.

Anonymous's picture
Anonymous Sun, 08/20/2017 - 2:42pm

My little limes are kinda leggy and not that bushy. I know to prune in late winter how do I get them bushier and taller?

Stacey Hirvela's picture
Stacey Hirvela Mon, 08/21/2017 - 2:36pm

How much are you cutting them back? It's best to prune panicle hydrangeas like Little Lime by just one-third their total height - cutting them more than that can cause them to put out long, leggy shoots. It could be that they are leggy because they aren't getting enough light, too - they need a minimum of 6 hours of bright sun, though if you live in a hot climate, as few as four hours of light may be sufficient.

Anonymous's picture
Anonymous Wed, 08/16/2017 - 8:20am

The article above stated that little lime has the same colour as limelight, but in a smaller package. I purchased and planted 11 little limes throughout my garden but they are markedly greener then the limelights I have. They have displayed no white whatsoever, in contrast to the creamy bright white of my limlelights (which really brightens up certain foliage heavy areas in the yard). Will the colour of the blooms on the little limes match the lime lights once the plant matures? If not, I may ask my nursery to ecxchange them for something that will more closely match the limelight's white, but in a dwarf form. In that case, what would you recommend?

Sarah Geoghegan's picture
Sarah Geoghegan Wed, 08/16/2017 - 9:46am

Little Lime go from green, to cream, back to green, and then go pink during a season. It could very well be that the Little Limes you have are starting to go back to a green color, as they do start to do so around this time.

Anonymous's picture
Anonymous Thu, 08/10/2017 - 9:08pm

So I've always wanted to prune my giant Hydrangea Paniculata into tree form, it has overgrown the area and started crowding out other plants. I started to prune just a bit & wait until winter as usual, but then I got all Edward Scissorhands and finished the job. It now looks like a tree, but I hope I haven't damaged it. It's about 10-15 foot high and very settled in its spot. Do you think it'll beb okay?

Stacey Hirvela's picture
Stacey Hirvela Mon, 08/14/2017 - 2:58pm

Even if it looks like it has a "bad haircut" right now, it should recover without a problem. They are very tough plants, especially when they are so well-established, so I don't think you have anything to worry about. If you'd like to send us a photo, you can do that here: https://www.provenwinners.com/feedback and we'd be glad to provide further thoughts.

Anonymous's picture
Anonymous Tue, 08/01/2017 - 10:04am

Help! My Lady in Red hydrangea bloomed for two years and hasn't bloomed since! I live in Oklahoma and need to know when and how to prune. All I get is a large, green bush. What am I doing wrong?

Stacey Hirvela's picture
Stacey Hirvela Mon, 08/07/2017 - 9:21am

Lady in Red is a type of big-leaf hydrangea, Hydrangea macrophylla. This type is best left unpruned except to remove any dead wood in early spring. You should never cut it back at all. If you aren't cutting your plant back and it's still not blooming, then that indicates that the flower buds are being damaged by spring freezes and you will need to cover your plant in April and perhaps May on nights when a frost or freeze threatens.

Anonymous's picture
Anonymous Sun, 07/30/2017 - 8:00am

I have the most beautiful quick fire hydrangeas, most of which I just bought, and 2 large ones about 6 years old which I transported from our old house last summer. They all look spectacular. I am only here in the northeast (zone 4-5) from May 21 to October 7. When would be the best time for me to prune these . Thanks!!

Sarah Geoghegan's picture
Sarah Geoghegan Mon, 07/31/2017 - 8:58am

Panicle hydrangeas bloom on new wood, which means they can be pruned in spring and will still bloom that season. We recommend cutting them back by about one-third their total height in early spring, just as the new growth is beginning to emerge on the stems. This will serve to remove the spent blooms and ensure that the season's growth comes from the heavier, thicker buds further down the plant.
Hope this helps!
Sarah
Proven Winners

Anonymous's picture
Anonymous Thu, 07/13/2017 - 7:14am

Hi, I planted three incrediballs last May. Two of them of doing great, one tends to have some wilting some days. One bloom did not recover, and the leaves also wilted and shriveled up. I foolishly assumed the whole stem was dead and I cut the stem to the ground. Of course I then saw it was still green throughout. Wish I had consulted this website before I cut it!! Anyway, it was a thicker, older stem. The rest of the plant looks great, though it has a little gap now. Did I do the plant harm cutting that stem? Will it be ok?

Stacey Hirvela's picture
Stacey Hirvela Tue, 07/18/2017 - 7:18am

No worries, it will definitely be okay! It may take all season to grow out of its  haircut, but you didn't do any lasting harm. Next year, you won't even be able to tell where this cut was made.

Anonymous's picture
Anonymous Mon, 06/05/2017 - 1:01pm

It's June 5th and I forgot to prune my Zinfin Doll hydrangea in the spring. I planted them around this time last year and they bloomed beautifully! Is it too late to prune them or should I just let nature take its course at this point? If I. Should wait to prune, do I wait until the spring? #newgardnerhere

Stacey Hirvela's picture
Stacey Hirvela Tue, 06/06/2017 - 7:09am

Panicle hydrangeas like Zinfin Doll don't strictly require yearly pruning, so there's nothing to worry about. I would not recommend pruning this late in the season (early June) - just let it do its thing. Next year, just as the new growth begins to emerge on the plant in early spring, you can cut the plant back by one-third its total height to ensure that the growth comes from the big, vigorous buds further down the stems.

Anonymous's picture
Anonymous Thu, 05/18/2017 - 7:25am

I live in southeast Alabama. I absolutely love hydrangeas but the extreme heat here is unmerciful at times. When I first heard about limelights I had to have some as they were perfect sunloving plants. Mine are 3 years old this summer and have been beautiful til now. I have very little foliage and it seems most of the stems are dead. Please help

Stacey Hirvela's picture
Stacey Hirvela Fri, 05/26/2017 - 7:43am

It sounds like your plants may have gotten too wet, which is the most common problem in warm climates. Can you contact us here and send us a photo: https://www.provenwinners.com/feedback

Anonymous's picture
Anonymous Sun, 04/16/2017 - 5:41pm

We are in Virginia and had an incredibly warm winter and spring. My smooth hydrangea bloomed before I could prune it. If I prune it now in April will I have flowers next year? I've always read about pruning these plants before they bloom for spring. Not sure what to do!

Stacey Hirvela's picture
Stacey Hirvela Thu, 05/25/2017 - 7:47am

If it is indeed a smooth/Annabelle type hydrangea and it has finished blooming, pruning it now will NOT impact the flowering for next year, as this type does not carry its flower buds through winter - it makes them new each spring, after growth begins. 

Anonymous's picture
Anonymous Tue, 01/03/2017 - 9:24am

I need to cut back six enormous annabelles that spread further out every year. They hang over the driveway and are growing too close to each other. Please describe how to cut them at the roots, under the soil. I only find prunning info which is not what I need. I want to do this correctly and not harm the plants. They are hardy and strong and every year produce fantastic large blooms. I love them so much. Thanks for your help. I live in Tennessee.

Stacey Hirvela's picture
Stacey Hirvela Tue, 01/03/2017 - 3:43pm

You can divide smooth hydrangeas like 'Annabelle' but you will experience some plant loss. My advice would be to dig up each plant entirely in spring, as soon as your soil is workable (in other words, not too wet, and the weather is still cool). Dig as large a rootball as you can. Then, using a sharpened garden spade, divide each large clump of plants into 4-6 pieces. Err on the side of larger, rather than smaller, clumps, and make sure each section has a good amount of healthy looking roots attached. At that point, you can replant and give away an extras to a friend or perhaps to a local park. Please note that most shrubs cannot be divided this way; 'Annabelle' is an exception.

Anonymous's picture
Anonymous Sat, 12/03/2016 - 5:14pm

I planted a Little Quick Fire panicle hydrangea in mid-Sept. Since this is it's first winter in it's new location, should I wait until early spring to prune it? Or go ahead and prune in late winter because we may get heavy snows here?

Stacey Hirvela's picture
Stacey Hirvela Mon, 12/05/2016 - 3:48pm

You can prune it at either time, it's up to you - and that's true even when your plant is mature. I generally recommend pruning in spring, as the dried flowers contribute some welcome interest to the winter landscape, but many gardeners in snowy climates prefer winter pruning. I would prune it only very lightly this season (take off just a few inches) but in the future, plant to cut it back by about one-third each year.

Anonymous's picture
Anonymous Tue, 10/25/2016 - 4:54pm

Hi I live in Minnesota, when is the best time to prune back the lime light hydrangeas and how much do I prune them back? Mine are enormous!

Stacey Hirvela's picture
Stacey Hirvela Wed, 10/26/2016 - 10:49am

I generally recommend that you prune panicle hydrangeas like Limelight in spring, though some folks who live in areas where they get a lot of snow prefer to prune theirs in late fall, after the plant is completely dormant, to help minimize any breakage from snow loads. It's completely up to you. As for how much to cut off, the general rule of thumb is to cut off one-third of the plant's total height, but if yours is really large, you can cut it back by half. The truth is you can cut it back even further, but what happens in that case is that the stems may not be strong enough to hold the flowers next year (though it does grow out of this after a year or two). I'd recommend a more restrained approach and take off just half to a third if that's workable for your situation.

Anonymous's picture
Anonymous Sat, 09/17/2016 - 7:41am

I live in Virginia, and my Annabella and vanilla Sunday's like stated in above post will not bloom any suggestions?

Stacey Hirvela's picture
Stacey Hirvela Mon, 09/19/2016 - 2:14pm

A third possibility in addition to the reasons below is that deer or rabbits are eating the flower buds. Deer can be remarkably adept at eating just the flower bud, leaving little evidence that they were even there. In this case, I'd recommend applying a deer repellent.

Anonymous's picture
Anonymous Sat, 09/17/2016 - 7:39am

I have four Annabella hydrangeas, they were bought via mail ; they came in at about 2 inches tall. After two summers they are huge, but still NO flowers. They get about 5/6 hours early of morning sun and than rest of day is shade. I have used natural compost as well as Alpaca poop. I have two vanilla Sunday hydrange in large pots that get about 10 hours of sun, they had flowers when I bought them, this year nothing! Again I used furtileizer and only a tiny bloom this September. We did have a very hot summer with no rain, but I watered weekly. Any sujestions would help for next season. ...AH

Stacey Hirvela's picture
Stacey Hirvela Mon, 09/19/2016 - 2:13pm

It may be that your plants still need more time to develop their root systems before they will bloom well. Hydrangeas like to have a good root system in place before they will devote a lot of energy to flowering. It may also be that your alpaca dung is giving them excessive nitrogen - when hydrangeas get high doses of nitrogen, they often will grow lots of foliage at the expense of flower production.

Anonymous's picture
Anonymous Thu, 09/08/2016 - 1:05pm

When is the best time of the fall season (Ohio) to prune/winterize your Limelight Hydrandea bush? How far down on the bush should I cut back for the best growth for the upcoming season? Any thoughts?

Stacey Hirvela's picture
Stacey Hirvela Mon, 09/12/2016 - 6:59am

We generally recommend spring pruning over fall pruning, but fall pruning is still fine if you prefer it. If you wish to prune panicle hydrangeas in fall, do it once the plant has gone completely dormant - probably late November in Ohio.

Anonymous's picture
Anonymous Tue, 09/06/2016 - 11:36am

Hi, I live in zone 5 just north of Toronto. I bought a Limelight Hydrangea a few years ago and it did very well. However this past summer we had a bad outbreak of Grubs/Japanese beetles and I think they may have caused harm to it as it only grew some leaves, left many bare branches and no flower buds grew. We also have Salvia and Bellflowers that also didn't do well and their roots have rotted. What do you recommend I do to revive the Limelight? I made a mistake and pruned the dead flowers from previous summer a bit too late in the spring. I also sprayed Grub Busters Nematodes on the soil to reduce the grub problem.
Thanks,

Stacey Hirvela's picture
Stacey Hirvela Mon, 09/19/2016 - 8:09am

Panicle hydrangeas like 'Limelight' are relatively shallow rooted, so seeing the roots on the soil surface doesn't necessarily indicate a problem. I would recommend, however, that you give them a good 5-7.6 cm thick layer of shredded bark mulch.

Anonymous's picture
Anonymous Wed, 09/14/2016 - 10:07pm

Hi I would rather not remove the Limelight. I think it gets alot of sun. I see some roots growing upwards above the soil. Does this mean I'm not watering it enough?

Stacey Hirvela's picture
Stacey Hirvela Mon, 09/12/2016 - 7:02am

Do you have a place you could move it to? Perhaps a different location would be better for it. Panicle hydrangeas like Limelight also need at least 6 hours of sun in your climate to grow really well, so perhaps a sunnier location would help as well. As for pruning, prune it in early spring, just as the new growth begins to emerge on the stems.

Anonymous's picture
Anonymous Sun, 08/21/2016 - 9:59pm

I bought 3 PW incrediball plants and 2 out of the 3 bloomed flowers this summer. The 2 with flowers haven't reached their full height yet and the 3rd one (no flowers) is growing to be over 5 ft tall. Is there a reason why the 3rd one isn't blooming flowers and the other 2 aren't growing to be as tall?

Stacey Hirvela's picture
Stacey Hirvela Mon, 08/29/2016 - 7:32am

It's hard to say without seeing the plants, and knowing where you are located and how long ago you planted them. Would you be able to contact us via private message here: https://www.provenwinners.com/feedback with that information (select "shrubs" as the category)? We can also tell you how to send us photos when you write us as well.

Anonymous's picture
Anonymous Wed, 08/10/2016 - 12:11pm

I have 6 of the Little Lime Hydrangeas in a hedge and am wondering about drying them for various uses. When my husband cut the old blooms off last winter they looked as though they were already dried. Do I need to spray something on them or do anything else to keep them indefinitely?

Stacey Hirvela's picture
Stacey Hirvela Mon, 08/29/2016 - 7:30am

You don't need to spray anything to preserve the flowers. You can learn more about drying hydrangeas here: https://www.provenwinners.com/Drying-Hydrangeas.

Anonymous's picture
Anonymous Wed, 06/15/2016 - 12:21pm

My Incrediball Hydrangeas are growing nicely and I have quite a few large white blooms. If I cut these to bring inside and enjoy will new growth and blooms emerge this year for continuous blooms all summer?

Stacey Hirvela's picture
Stacey Hirvela Tue, 06/21/2016 - 3:12pm

New growth will continue to appear, but Incrediball is not a reblooming shrub, so cutting branches will not encourage additional flowers. However, you shouldn't let that stop you - Incrediball makes a great cut or dried flower! If you are looking for a reblooming Hydrangea arborescens, check out the Invincibelle series: https://www.provenwinners.com/plants/search/shrubs?keys=invincibelle&hardiness_zone=All&light_level=All&available_online=All

Anonymous's picture
Anonymous Fri, 06/03/2016 - 7:22pm

I got an incrediball hydrangea and there are only green leaves. It's about 2 feet and I haven't taken it out the pot. I'm in zone 5. When should I do about it?

Best
V

Stacey Hirvela's picture
Stacey Hirvela Mon, 06/06/2016 - 2:57pm

Smooth hydrangeas like Incrediball do need to be established before they will really flower well, so maybe time is the issue. It may also be that it's simply too early - here in our zone 6 trial gardens, in early June, tiny flower buds are JUST starting to appear, In zone 5, they may be a bit more delayed. I would recommend that you plant it as soon as you can and keep it well-watered this season. It may not flower this year, but you will definitely start to see bloom next year and the show will continue to improve each year thereafter.

Anonymous's picture
Anonymous Sat, 05/21/2016 - 7:19am

I bought a macrophylla at Easter time in March. The flowers are fading and it is only mid-May. Should I trim the dead flower or let it go on it's own. I do see lots of new leaves growing and don't want to harm the shrub.

Stacey Hirvela's picture
Stacey Hirvela Tue, 05/24/2016 - 10:58am

It's really up to you - some hydrangeas age gracefully, with the blooms turning to handsome colors, while others not so much. There's no harm in cutting off the flowers if you don't like the way they look - cut them off just above the set of leaves immediately below the bloom. There's no harm in leaving them, either.

Anonymous's picture
Anonymous Sat, 05/14/2016 - 10:01am

Hi. I read an article that recommends early-spring pruning paniculatas back to a total height above the ground of 12" ideally or 24" max. The author said that the plants would then send out arcing stems from the point. This sounds easier that what I've been doing, which is pruning each bloom back to healthy buds. What do you think?
I have a Little Lamb, several Little Limes (my all-time favourite plants!), and a Limelight.
My Limelight got damaged by a fallen tree and is very spindly. It's also in a pretty shady spot, zone 3a. I'm wondering if I should relocate it to a sunnier spot? It's planted on the north side of a tall fence.
Thank you!

Stacey Hirvela's picture
Stacey Hirvela Thu, 05/19/2016 - 10:17am

I would recommend you move your Limelight to a sunnier spot. It will recover faster and perform much better if it gets at least six hours of bright sun, ideally in the morning. Opinions about pruning panicle hydrangeas differ - you certainly can prune them that hard if you want, but in my experience, this deprives the plant of the chance to form a strong, supportive base. I prefer to cut the plants back by about one half to one third their total height in early spring. The plants should flower well in both cases, so I would recommend that you try the one-third method next year, then try the more severe method the following year. Take photos of the plants in bloom and compare them to see which effect you prefer!

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