Hydrangea Care
Watering
- For the first year or two after planting and during any drought, be sure hydrangeas get plenty of water.
- Water at a rate of 1 inch per week throughout the growing season. It’s better to deeply water 3 times a week than sprinkle water in a shallow manner. This encourages root growth.
- Bigleaf and smooth hydrangeas require more water, but all varieties benefit from consistent moisture.
- Leaves will wilt if the soil is too dry, and flowering will be hampered by a lack of water.
- Use a soaker hose to water deeply and keep moisture off the flowers and leaves.
- It’s best to water in the morning to prepare hydrangeas for the the heat of the day and to avoid disease.
- Add organic mulch underneath your hydrangeas to help keep the soil moist and cool, add nutrients over time, and improve soil texture.
Fertilizing
If your soil is rich, you may not need to fertilize hydrangeas. Too much fertilizer encourages leafy growth at the expense of blooms. The best way to determine your fertility needs is by using a soil test.
Apply fertilizer based on your specific hydrangeas. Each variety has different needs and will benefit from different application timing.
- Bigleaf hydrangeas can benefit from several light fertilizer applications in March, May and June.
- Oakleaf and panicle hydrangeas do best with two applications in April and June.
- Smooth hydrangea plants only need fertilization once, in late winter.
Winter protection
- In the fall, cover plants to a depth of at least 18 inches with bark mulch, leaves, pine needles, or straw in the fall. If at all possible, cover the entire plant, tip included, by making cages out of snow fencing or chicken wire, and loosely filling the cages with leaves. (Do not use maple leaves, as they tend to mat when wet and can suffocate the plant.)
How to Change the Color of Hydrangea Flowers
It is possible to change the flowers’ colors, but not instantly. Color correction takes weeks—even months. Wait until the plant is at least 2 years old to give it time to recover from the shock of its original planting. Also note that it’s easier to change blue flowers to pink than pink to blue.
It’s not every hydrangea that changes color. The color of some Bigleaf hydrangeas (H. macrophylla)—especially Mophead and Lacecap types—and H. serrata cultivars change color based on the soil pH.
Acidic soils with a pH of less than 5.5 produce blue flowers; soils with a pH greater than 5.5 produce pink flowers. White flowers are not affected by pH.
See How to Change the Color of Hydrangea Flowers for more information.

How to Prune a Hydrangea
Many of our readers’ questions involve pruning hydrangeas. And no wonder—it’s confusing, and all depends on the variety of hydrangea. Luckily, as long as you know which type you’ve got, it’s easy to figure out what sort of pruning technique to employ.
Learn the essentials below, then read more about how to prune hydrangea varieties here.
Hydrangea Type |
When to Prune |
Where Flowers Appear |
---|
Bigleaf (H. macrophylla) |
Summer, after flowering |
On old growth |
Oakleaf (H. quercifolia) |
Summer, after flowering |
On old growth |
Panicle (H. paniculata) |
Late winter, before spring growth |
On new growth |
Smooth (H. arborescens) |
Late winter, before spring growth |
On new growth |
Mountain (H. serrata) |
Summer, after flowering |
On old growth |
Climbing (H. anomala subsp. petiolaris) |
Summer, after flowering |
On old growth |
Pruning Common Hydrangeas
The most common garden hydrangea shrub is the Bigleaf variety, Hydrangea macrophylla. (See more below.)
Bigleaf (H. macrophylla), Oakleaf (H. quercifolia), Mountain (H. serrata), and Climbing hydrangeas (H. anomala subsp. petiolaris) are pruned AFTER the flowers fade in the summer. These varieties bloom on the previous season’s stems (“old wood”).
- Flower buds actually form in the late summer and flower afterwards the following season, so avoid pruning after August 1.
- Only cut away dead wood in the fall or very early spring.
- To prune, cut one or two of the oldest stems down to the base to encourage branching and fullness.
- If the plant is old, neglected, or damaged, prune all the stems down to the base. You’ll lose the flowers for the upcoming season, but also rejuvenate the plant for future years.
- It’s best not to deadhead (remove faded blooms) on the big Mopheads; leave them over the winter and cut them back in early spring (to the first healthy pair of buds). It’s fine to deadhead the Lacecaps; cut down to the second pair of leaves below the flower head.
- When growing H. macrophylla (and H. serrata) varieties in Zones 4 and 5, do not prune unless absolutely necessary, and then do so immediately after blooming. Otherwise, remove only dead stem in the spring.
Other Hydrangeas
Panicle (H. paniculata) and Smooth (H. arborescens) hydrangeas are pruned BEFORE flower buds are formed. These varieties bloom on the current season’s stems (“new wood”).
- Prune in the late winter when the plant is dormant. This means that if the buds are killed during the winter, the plant will produce new buds in the spring which will produce blooms.
- In general, prune only dead branches, and do not prune to “shape” the bush.
Read more about how to prune hydrangea types.
Reader Comments
Leave a Comment
scorched leaves
We can’t be certain. but it could be Cercospora leaf spot which is a disease caused by the fungus Cercospora hydrangeae. This occurs in warm weather with frequent rain. Make sure that the soil is well draining and the plant is in a place in which the air circulates well. Consult a nursery about a fungicide for ornamental plants. If possible, bring the plant into the nursery and see if they identify the problem as something else.
Hydrangeas
How do you get hydrangeas to bloom? Mine rarely blooms. Do you think it is a pruning issue?
Hydrangeas not blooming
There are several reasons why hydrangeas won’t bloom. First, they do need some sunlight to set flowers—so if yours are in total shade, that could be limiting flowering.
Also, many people prune hydrangeas incorrectly, cutting down the old stems which is where some varieties set buds! See our article on when to prune different hydrangeas: https://www.almanac.com/news/gardening/gardening-advice/when-prune-different-kinds-hydrangeas
Finally, in any year with a late frost, hydrangea buds can get frozen; that means no blooms for the year. Hope this helps.
Planting hydrangeas
I bought a hydrangea & started it in a pot. It is growing & I was wondering if it would be wise to plant in ground in the fall in zone 8
hydrangeas
Is it best to just use mulch around the plants or also use plastic first? If so, how big should the opening be to allow for watering and feedling? Can it be against the plant?
Thank you!
Planting hydrangea seeds
I have hydrangea seeds, what is the right time to sow 7 what procedure is to be followed. we live in northern india & its monsoon time here. When not raining the temp goes very high. Will they survive?
hydrangea from seed
The best advice we have is to open this link and scroll to page 6, top left: https://extension.tennessee.edu/publications/Documents/PB1840-A.pdf
We hope this helps!
Watering Hydranges
I just planted two hydranges out front for morning sun. Can you over water hydranges? What are the signs of overwatering verses signs of too much heat? Where does the plant like to be watered? At base or all over?
Thanks for your help.
tracy
when to water
Most plants prefer to dry out between waterings. Floppy leaves/foliage under a hot sun can appear to be a sign of needing water but is not always. Often the leaves recover in the evening/overnight. Water at the base. See here for more information re care: https://www.almanac.com/plant/hydrangeas
glowing ember hydrangeas..
Do I need to prune and if so when...i have morning morning sun and then shade is this good for them.
Hydrangea gardening in the Phils
Hi . Just bought 3 pots of hydrageas in blue , pink and maroon. Should I plant them in containers or on the ground and how do keep them thriving? Thanks
plant and then what?
Hi, Jean, We have just about all of the guidance you need in the notes above, from planting to caring, etc. Take a look. As for containers vs ground, containers will need to be watered more often (water in the containers evaporates more quickly) and if they are in the ground, you will not have to transfer them to a larger container. But it really all depends on your situation (ground space, deck, sunlight/shade, etc.) and what you want to do.
We hope this helps!
Hydrangas
I just purchased my hydrangea last night..June 24, 2018 I planted it last night will my plant survive?
will my hydrangea survive?
Are you referring to its endurance through this heat dome/hot spell that is covering much of the eastern US? We really can not say; there are too many variables. Read the guidance above and see if it sounds like your plant, your situation.
Hydrangea won't bloom
I bought a very small hydrangea bush , with no flowers on it,at the grocery store 4 years ago. Every year it grows and this year especially it looks great, big and bushy. It is probably about 2 and 1/2 feet tall now. The only problem is it has never bloomed one flower. Nothing! Is something wrong with it? I have no idea what kind it is.
hydrangea not blooming
Hi Tara, We answer this question below. (You are not alone!) Often this is a sunlight/shade issue or a pruning issue. If you prune at the wrong time, you could be cutting off next year’s blooms. See more about pruning hydrangeas.
hydrangea won't grow
I was given two hydrangeas one year apart. The first one grew very well for 2 years--the year it was planted and then it came back beautifully. The second one did okay the year it was planted. This year, neither of them did anything--they look totally dead. What's going on? We did have some late cold weather here in Virginia.
pruning?
A week ago i planted beautiful blue hydrageas, after soil preparation. The plants look great and still full however the blossoms are laying over on the ground as they are so full and heavy. Should they be trimmed back to allow the plant to grow and re-bloom or should we stake to up, or should we leave it alone and let it make the adjustment to the new environment?
Pruning Blossoms
If you think that you’ve seen enough of the blooms for this year, go ahead and snip them off. This will save the plant from having to expend energy turning those flowers into seeds—energy that it can use to grow new roots instead.
Wilting hydrangea
I have a couple let’s dance big easy hydrangeas. They were planted almost a month ago and the heads to them just started wilting... I try to water once a day and use miracle grow once a week. Can I cut the head off for regrowth? Or will it not re grow?
hydrangea care
“Let’s Dance” seldom needs pruning; it blooms on old and new wood. When a hydrangea is wilting, the most common reason is poor drainage. Are their feet wet? The second most common reason is temperature. It may just be too hot in their location. When it’s about 80 degrees, all hydrangeas will wilt. The question is: does it perk back up in the morning? Then it’s fine. If it’s always wilting, then it may get too much sun and you need to move the plants. “Let’s Dance” does better in a location with afternoon shade.
no new leaves or buds
I purchased two Bigleaf hydrangeas (H. macrophylla) last summer and they did quite well all season. I did not remove the anything from the stems. My husband however cut the stems and dried mopheads off this spring. All I have are brown stems coming out of the ground. There is no signs of new leaves only wine coloured buds. Will these plants amount to anything this year. My husband wanted to pull them out but I paid too much money for them last year and am hopeful that they will still come alive and bloom!!
a Bigleaf future
See the pruning tips and advice above, in terms of timing and the thoroughness of the cutting that was done. Considering that these plants can be “pruned” to the ground and come back, there may be hope.
Hydrangea
I have this Hydrangea now for three years and it looks great and healthy looking, however, I never see it bloom at all. What am I doing wrong.
why no flowers?
There are several reasons why hydrangeas won’t bloom. First, they do need some sunlight to set flowers—so if yours are in total shade, that could be limiting flowering.
Also, many people prune hydrangeas incorrectly, cutting down the old stems which is where some varieties set buds! See our article on when to prune different hydrangeas: https://www.almanac.com/blog/gardening/garden-journal/when-prune-different-kinds-hydrangeas
Finally, in any year with a late frost, hydrangea buds can get frozen; that means no blooms for the year. Hope this helps.
pinacle hydrangea planting (limelight)
Hi! I would like to plant a pinacle hydrangea in my zone (7b) but I think it might be best to wait until to fall now. Any suggestions?
when to plant...
It’s so early in season still, we would say now. But then we thought that the Morton Arboretum in Illinois, which has quite a few of them, might have more specific advice. You will find the Arboretum and lots of info here: http://www.mortonarb.org/trees-plants/tree-plant-descriptions/panicled-h...
Broken stems
While planting a new younger plant, I accidentally broke almost every single stem on this beautifully flowering plant. Is it done for or is there hope? Can anything be done to save the larger newly developing flowers?
broken stems
It happens… Give the plant some TLC, in the ground or in a pot and see if the roots take hold. It would be a while before you would see any significant top growth (possibly a year; hard to be certain). But you say you broke “almost every single stem” so they may be hope for growth sooner. If the flowers have broken off, you could put the stems in water; they might open and last a couple of weeks. It depends on their stage of development.
From the beginning
I received a Mother’s Day arrangement of cut flowers - roses, hydrangeas and baby’s breath. There are two cuts of a white hydrangea. I live in Georgia. Would I be able to root from a cut off and if so would you help me with instructions - How to, how long, inside or out and when to actually plant. Our summers are pretty harsh so don’t want to make any mistakes with timing.
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