Many people find deadheading to be a simple and enjoyable gardening task. To deadhead hydrangeas, all you need is a pair of gardening gloves, a pair of pruning shears, and a container to collect the faded blossoms.
Before you begin, use a towel dipped in denatured alcohol to clean the pruner blades. You’ll need to wipe the pruners between cuts to prevent spreading illness throughout the bush, so keep the cloth close at reach.
Simply remove each wasted flower and follow its stalk down to the next group of huge leaves; this is where you make the cut when deadheading your hydrangeas.
Should I remove the hydrangea’s dead blooms?
Because hydrangea blossoms are so large, deadheading a hydrangea can help the plant focus energy on other, more crucial aspects of its growth. To promote new blossoms and keep your plant appearing healthy, you should continue this approach throughout the flowering season. The time of year determines the best way to deadhead hydrangea blossoms.
You should cut the wasted blossoms with a long stem still attached if it’s before August. Look at the stem’s junction with the larger branch; there ought to be several little buds there. Make sure to keep the buds whole when trimming the stem back as short as you wish.
The plant is probably developing new buds along the stems in anticipation of the following spring if it is August or later. Check the area between each set of leaves as you work your way down the stem from the faded bloom. You should see buds at the first or second pair of leaves. Offset the spent bloom far above those buds with a knife.
Carry a cloth that has been dipped in denatured alcohol while you work. To stop disease from spreading throughout the bush, wipe your pruners clean with the rag in between cuts.
How should hydrangeas be deadheaded?
These are your macrophylla hydrangeas, also known as mophead and lacecap, which come in purple, pink, and blue. They also include hydrangeas with oak-shaped leaves. While reblooming kinds flower twice, some cultivars only bloom once per season on stems from the previous year (old wood).
The initial set of hydrangea blossoms should be deadheaded as soon as they start to turn brown and dry. Cut the stem immediately above the first set of leaves and below the flower head. When this second set starts to fade, you can deadhead once again for reblooming varieties, but only until about mid-August. Your hydrangeas will then produce buds for the flowers of the next year; you don’t want to unintentionally cut these off. After the summer has ended, dried flower heads can remain on the shrubs to add visual interest over the winter.
What happens to hydrangeas if I don’t deadhead them?
Deadheading too-tall hydrangeas can occasionally be challenging. Your other option is to keep them on if you don’t have the skills to reach spent flowers or all of the spent blooms. And you can do that without suffering too much harm.
Simply omit deadheading hydrangeas, and your plant won’t suffer. At least nothing major enough to need worrying about.
Your hydrangea might not produce as many or as large of blooms as it would have if the spent blooms had been removed. It will nevertheless continue to bloom.
Having said that, you can think about pruning hydrangeas that have gotten too tall in order to make them smaller and easier to handle.
This will make it simpler for you to maintain the tidy appearance of your hydrangeas. Additionally, it will make it simpler to remove spent blooms from plants and promote future blooms with greater vigor.
When should I prune the hydrangea’s flowers?
Late summer to early fall (August to September) sees the development of these plants’ bloom buds for the next year. So, before August, prune these shrubs once they are finished blooming (again, make a heading cut).
The Endless Summer is an exception. The Original Bigleaf Hydrangea (H. macrophylla ‘Bailmer’ PP15,298) as well as many cultivars from Bailey Nurseries’ Endless Summer line, including Blushing Bride, BloomStruck, Summer Crush, and Twist ‘n’ Shout.
On the wood from last year and any new wood that sprouts this year, the H. macrophylla blooms. Therefore, whether you prune it or not, it will bloom. A big, 4-foot-tall ring of hardware cloth can keep rabbits from nibbling on the stems of H. macrophylla over the winter.
The pink to blue tint of the Endless Summer hydrangea’s flowers (achievable with the right soil amendment) plus the fact that it blooms on both old and new wood caused it to make a big splash on the Minnesota landscape plant scene.
Should I remove the spring blooms of my brown hydrangea?
Pruning is not typically thought of as one of the many gardening activities that may be done in the fall, despite the fact that there are several. It can be difficult to cultivate hydrangeas successfully in New Hampshire, and if you want your plants to blossom, there is frequently very little room for error in pruning.
Wait until Spring to prune hydrangeas
In New Hampshire, hydrangeas come in a variety of kinds, and each one has quite distinct growth patterns and pruning needs. Some plants only produce flowers on fresh growth, while others mostly produce flower buds on older wood. In any case, it is better to postpone all hydrangea pruning until spring. Hydrangeas, as with all other trees and shrubs, go dormant in the fall. Not much new growth is produced by them until the next spring. As new growth is more vulnerable to harsh cold at the location of wounds, plants that have been trimmed now run a higher risk of winter damage. Additionally, fall pruning may lessen the quantity of June blooms.
Considerations for pruning hydrangea species commonly grown in New Hampshire gardens
The gigantic blue mopheads or lacecaps known as bigleaf hydrangeas (Hydrangea macrophylla), which are familiar to most gardeners, form their flower heads at the tips of stems on old wood from the previous year. Although lower buds along the stem have the capacity to grow blooms as well, the hydrangea’s blossoming potential is decreased if those buds are died or damaged throughout the winter. Wait until new growth sprouts in the spring before pruning your bigleaf hydrangeas. Approximately 1/4 inch above the first group of live buds, prune the plant. A hint: the interior of living stems will be green, whereas the interior of dead stems will be brown. Cut completely dead stems flush with the base.
The three other hydrangea species that are frequently planted in Fresh Hampshire—oakleaf (H. quercifolia), panicle (H. paniculata), and smooth—all bloom on new growth. Before the emergence of the leaves in the late winter and early spring, remove wasted flowers and prune the plant to improve its general structure and habit.
In conclusion, there are a ton of other activities you can engage in to stay occupied in the garden during fall. Save the spring for hydrangea pruning.
What makes deadheading and trimming distinct from one another?
Fortunately, all you need for this project are some clippers, gloves, and a pail to gather your cuttings. I really appreciate this multi-snip tool that I discovered last spring for this gardening task because deadheading is typically a little more delicate than full-on trimming. Use anything you have, including regular bypass pruners.
Since I normally go through 1-2 pairs of gloves in a season (due to holes in the fingertips…), I bought these gloves last spring. I was impressed by how lightweight but robust they are. Since I have spare pairs accessible for any garden assistance I may hire, I haven’t even pierced the first pair’s fingertips yet.
General Pruning-Deadheading Tips
(Note: pruning refers to removing any portion of the plant, from large to small – what we’re doing in the summer is small, just cutting back some and trimming.) Deadheading is the practice of removing wasted flowers from plants.
The majority of your perennials and shrubs that have bloomed or are still blooming only require that you “deadhead,” or cut off the spent blossoms. To determine where to cut the dead flower, consider the following two factors:
- Like this buddleia in the picture above, you can prune it back to the first sign of new growth. This small variety (Lo & Behold ‘Ice Chip’) will continue to bloom into the fall thanks to those new stems on the sides that will bear additional flowers.
- OR, you might prune it more, taking further cuts to keep it under control for the planting area. To prevent the plant from getting too huge or to assist it maintain a more aesthetically acceptable form, continue to look for new growth, but further down on the stems.
You’ll also find plants with dead flower stalks and leaves, like the daylily in this image. Your garden will look better into the fall if you take the effort to remove the browning, dead leaves and deadhead the flower stalks. The majority of daylilies have finished flowering, but they will continue to provide grass-like leaves as a backdrop to the garden. However, some types, like Stella d’Oro, will continue to bloom if the dead stalks are removed.
Shearing the plant back is the simplest approach to get rid of all the wasted flowers on perennials with tiny blooms, like hardy geranium. Once the majority of the wasted blooms have been removed from the plant, grab pieces with your hand and chop the entire part off. For a week or two, it won’t look its finest, but it will soon sprout new growth and produce more blooms.
The heavy blooms on mature hydrangeas may be causing the plant to bend and dip, exposing the crowns. It’s the ideal moment to remove the oldest blossoms, especially those at the bottom, so that the leaves can reposition themselves. If you cultivate a reblooming hydrangea, such as Endless Summer, it will keep producing new flowers for you.
The act of gathering all the blooms and decorating the home with vases of fresh flowers after hydrangea trimming in the summer is the greatest part!
You’ve undoubtedly been deadheading individual rose blossoms as they appeared over the previous few months, but your shrub will bloom more quickly if you trim back to a five-leaf junction, where new growth and blooms will develop.
Additionally, you should prune back to new growth to remove any damaged leaves and stems (like I obviously have on some of my roses – if you live in the Pacific Northwest, every rose will get blackspot…). This not only improves the appearance but also helps prevent disease from spreading to the new growth.
Have any advice to offer? Have you come across any plants that benefit from mid-season deadheading, shearing, or pruning? Comment below and let me know!
To get you thinking about fall, check out these additional posts from our Tuesdays in the Garden group!
Should hydrangeas be deadheaded in the winter?
Some hydrangeas, but not all, can be deadheaded, or the wasted flowers can be removed off the stem to promote better blooming later.
Only after blossoming in moderate climates, according to the RHS, should dead blooms on mophead hydrangeas be removed. According to their suggestions, it is preferable to leave the flowerheads on the plant throughout the winter to offer some frost protection.
Additionally, by leaving the dried blooms on the plant, you’ll keep the garden interesting through spring and they can make a beautiful sight when coated in frost.
However, after blossoming, the blooms on the more resilient lacecaps can be deadheaded.
In the spring, how far back should hydrangeas be pruned?
You can prune hydrangeas paniculata and aborescens more severely without losing this year’s blossoms because they bloom on new wood. Although pruning is not necessary, if it is not done the plant will grow taller, with the majority of its flowers at the top.
Cut back to a healthy framework
Trim the previous year’s growth back to a strong framework that is between 30 cm and 60 cm high in the early spring. On each stem, prune to just above a pair of sound buds. For large flowers, prune back to the lowest healthy buds; less firmly for a more natural appearance or a higher plant.
Watch Monty Don describe the many hydrangea trimming techniques in spring:
How can I increase the size of my hydrangea blooms?
According to Enfield, certain varieties of hydrangeas develop larger blooms on their own and as a result require varying amounts of water and sunlight. It’s crucial to understand what kind of hydrangea you’re cultivating, she advises. “Bigleaf (H. macrophylla), which includes ever-blooming varieties, Smooth (H. arborescens), Panicle (H. paniculata), and Oakleaf are the four main classifications of hydrangeas (H. quercifolia). To determine what kind of hydrangea you have and how to care for it, look at the plant tags.”