Winter winds and cold temperatures both have the potential to be fatal. This catch-all phrase simply denotes plant dying over the winter. The plant may perish due to the low winter temperatures or from drying out brought on by the winds.
Since hydrangeas become dormant in the winter, winter damage to hydrangeas can not become apparent until spring. If your hydrangea doesn’t produce any green shoots in March or April, it could be your first indication of harm.
Protecting the shrubs from winter’s wrath is necessary to avoid winter kill in hydrangeas, which includes the young buds on the plants. Laying down a heavy layer of mulch over hydrangeas’ root zone is a wonderful place to start with winterizing them. For this, straw works wonderfully.
Use a wire cage to enclose the shrub or construct a cage around it using sturdy posts and chicken wire for even better protection. Wrap the cage in burlap or insulating material. Additionally, you should give the plant a lot of water right before the ground freezes.
When pruning hydrangeas for the winter?
If and when you prune is the key to happy, healthy hydrangea flowers. Of course, fertilizing and offering the ideal environment have a lot to recommend them. However, if you don’t prune properly, your efforts will be in vain. Deadheading is not the same as trimming. Pruning refers to more drastic cutting to preserve shape or remove dead growth. However, feel free to discard spent blossoms or cut fresh ones to use in arrangements.
Hydrangeas can bloom on either fresh wood or old wood, depending on the species. The wood from which they blossom determines whether and when to prune.
Old wood-blooming hydrangeas do not require pruning and benefit from it. They’ll blossom more abundantly the next season if you leave them alone. But feel free to deadhead or gently thin. Just keep in mind that while new growth may appear, it won’t bloom until the following season. In our region, four different species blossom on aged wood. Additionally, they are not limited to the hues displayed here.
Climb using suckers. On your wall or trellis, resist the desire to remove the dormant growth.
The flower heads are more conical in appearance, and the leaves are large and resemble oak leaves. It’s a pleasant surprise for a hydrangea when its leaves turn reddish-orange in the fall.
They are very comparable to lacecap types, but smaller and with more compact leaves.
Pruning should be done in late winter or early spring on hydrangeas that bloom on new wood. Trim back to two feet to prune to shape. The next season’s blossoms are produced by strong, fresh growth that is encouraged by trimming. In our region, there are two types that bloom on fresh wood. They are also not restricted to the colors displayed.
Oakleaf variants are not included in cone-shaped blooms. Keep the blooms on throughout the winter to provide interest; even dried out, they are quite lovely.
regarded as a wild kind. They often have smaller blooms and leaves than Bigleaf variants and are completely white. They enjoy full sun and can grow very tall.
Knowing whether or when to prune now will help you avoid the disappointment of a hydrangea that doesn’t blossom. Don’t forget that a robust shrub will produce more gorgeous blossoms if it has well-draining soil and good organic fertilizer. Come on in, and we’ll show you where to go to develop your green thumb.
How are hydrangeas cared for in Colorado?
Shrubs called hydrangeas have attractive leaves and enormous, gorgeous summer blooms. They flourish in the shadow and add color to the garden with blossoms that are blue, pink, white, or lime green. A row of plants creates a flowery hedge, while one produces an exceptional specimen. There are dwarf and container versions that are compact but nevertheless produce large blooms for tiny gardens. All hydrangeas bloom in the summer, and there are several newer types available that will continue to bloom well into the next growing season. The landscape receives one final burst of color in the fall as the leaves change copper, orange, and pink.
Hydrangeas come in a variety of varieties with various flower styles and leaf shapes. The mophead form with large bloom balls is the most popular. Due to their large leaves, these are also called as smooth hydrangeas and bigleaf hydrangeas. Many of these make excellent garden plants, but they are frequently planted in tiny pots for florist blooms. In Denver, search for types that can withstand the cold, such as Annabelle and Incrediball, as well as the Endless Summer and City Line series. A petite cultivar with pink flowers, City Line Paris is around 3 feet tall and perfect for patio containers.
With a compact central cluster of tiny starry blooms surrounded by bigger open-faced sterile flowers, the flowers of the airy lacecap are flat and loose. The flower clusters, which can be rather enormous, put on an impressive display in the shade. Select a cultivar with white-marbled leaves to further brighten shady areas.
Large lobed leaves and tall clusters of flowers that are often white or greenish are characteristics of oakleaf and panicle hydrangeas. In the Denver area, they overwinter fairly successfully, becoming into big bushes with intriguing peeling bark. Select Hydrangea Quick Fire for more color. White at first, the bloom soon turns pink. Again, if room is restricted, compact types are available.
Many different sun and shadow situations are suitable for growing hydrangeas. Ensure there is sufficient sunlight for blossoming. Flowering will be reduced by excessive shade. Hydrangeas require organically rich, wet soils with good drainage. The majority of Colorado soils will benefit from the addition of peat moss and compost, which will help the soil retain moisture and become more acidic. Mulch is also useful for maintaining uniform soil moisture. Following planting, check often and water as necessary. For the first year or two until the plant is established, water it well. To avoid winter kill, don’t forget to water once a month during the winter.
How hydrangeas react to the chemistry of the soil is one of its intriguing characteristics. Alkaline soils generate a wide variety of pink blooms, while acidic soils will result in blue flowers. The availability of aluminum compounds that produce the floral hues is affected by the acidity balance of the soil. To control the color, there are a variety of soil treatments available, including peat moss for blue. Ask the specialists at City Floral for color suggestions because not all kinds respond to the soil treatments.
There are two components to hydrangeas’ winter hardiness. Because flower buds are frequently more delicate than leaf buds, hydrangeas can occasionally suffer damage from heavy frost if it occurs when the flower buds are most exposed. There are no blooms, but the plants will leaf out and grow healthily.
Where the flower buds develop is another aspect of hydrangeas. Some cultivars begin to grow buds on branches in the fall, overwinter, and then bloom the following spring. On ancient wood, they are supposed to bloom. The flower buds may die in the fall from an early hard frost. On aged wood, the bigleaf and oakleaf types bear fruit. These types’ flower buds will also be removed during the fall pruning process to eliminate the old wood. Pruning should be postponed until after spring blooming.
On newly formed branches that have sprouted throughout this blooming season, other hydrangeas, such as the smooth and panicle varieties, bloom. As the buds are emerging from dormancy, late spring frosts can harm this group. To protect the bloom, keep an eye on the weather and cover the plants. Since this group will generate blossoming new wood in the spring, pruning can be done in the fall.
For improved spring and fall hardiness, new hydrangea hybrids and cultivars are being chosen. Compact kinds require less pruning because they get smaller as they develop. Ask about trimming suggestions for the kinds you have chosen to get the most blooms. You’ll be overjoyed with the outcomes come next summer.
Do I need to take any extra steps to protect a hydrangea if I’m growing it outside of its proper growing zone? Should I cover them in burlap or another kind of covering like I might with other shrubs?
Giving it an additional blanket for the winter is a good idea if you’re trying to grow something in a somewhat hardy environment. You’ll likely need one or two more layers than someone who usually experiences the cold when you get off the plane from Hawaii to Minnesota in January. Burlap does offer some nice protection for the shrub, but you might also want to consider enclosing the shrub in a metal cage and stuffing the cage with pine straw or leaves before wrapping it in burlap.
How often should hydrangeas be watered over winter?
You shouldn’t have to water plants all winter long if you live somewhere that gets snow. You might need to apply once per month or so if you live in a warmer area without snow and little winter rain. You can leave it unless it’s completely dry because the plants’ water requirements are small because they aren’t growing and have no leaves. The same is true of container-grown hydrangeas. Easy as pie.
First Editions ‘Vanilla Strawberry’ Hydrangea
A panicle hydrangea called “Vanilla Strawberry” blooms from midsummer until the end of the season with sweet-colored blossoms. Cut down or shape plants in the late winter or early spring before blooms appear. Vanilla Strawberry is a standard that can grow to a height of 6 feet.
Don’t give up on it in the winter and fall. This time of year, they are intended to shed their leaves. If there isn’t snow cover, make sure it keeps hydrated all winter. The plants still need some hydration at their roots even though they are dormant. Snow cover serves as a water source as well as insulation. Make sure you have enough rain or water to get them through if you live somewhere where it doesn’t snow or doesn’t receive snow. Additionally, make sure mulch, such as wood chips, oak leaves, pine straw, or another type, is placed over the hydrangea’s base. Snow or no snow, it provides the necessary insulation as well as some extra defense against hungry rats and rabbits in the winter.
When trimming other plants in the late winter, you might be tempted to prune hydrangeas as well, but McEnaney advises that you should first identify the type of hydrangea you have before using pruning shears.
Remember, he says, to offer a minor clip in the spring if you have a reblooming or mophead hydrangea.
Late winter is the time to prune down cone-shaped hydrangeas by a third to a half. Prune a cylindrical oakleaf variety after midsummer flowering if you have one.
When in doubt, McEnaney advises against pruning in the fall.
You run the risk of jeopardizing your flowers for the following year by cutting off blooms that grow in the fall. Simply be patient and wait until spring to prune after this season’s blooms have provided you with some winter appeal.
Ask for assistance from a nearby nursery, garden center, county extension office, or even another gardener to identify it if you are unsure of the variety.
According to him, too much fertilizer can be detrimental.
The element that promotes bloom production and gives you the most value for your money is phosphorus, so seek for a fertilizer with a high concentration of it when you’re at your neighborhood garden center. Follow the instructions on the fertilizer package and avoid overfertilizing to avoid burning the root system and preventing the development of flowers. If anything, one more application of fertilizer in the middle of the summer is beneficial, but make sure to cease fertilizing by early fall.
Is the fall a good time to prune my hydrangeas?
Only prune these hydrangeas in the summer after bloom, not in the fall. In August and September, old wood hydrangeas begin to form their bloom buds for the following year. If you don’t prune your hydrangeas real soon, then it is better to wait until next year. If not, there won’t be any blossoms the next spring.
Which month should hydrangeas be pruned?
Depending on which group the plant belongs to, the timing and extent of pruning are determined:
Advice on Pruning for Group 1:
- As the days get shorter and the weather gets colder in the late summer and fall, buds for the following year’s blooms start to form.
- Typically, removing dead, diseased, or damaged branches is all that is required to preserve shape, size, and a healthy plant. Otherwise, gentle pruning ought to be practiced.
- In the summer, trimming should begin as soon as flowering ends, but no later than August 1. Pruning should not be done in the fall, winter, or spring because you risk removing fresh buds.
- Tip-pruning the branches in the spring as the leaves begin to appear can promote more numerous, smaller flower heads as opposed to fewer, larger flower heads.
Advice on Pruning for Group 2:
- On the growth of the current year, flower buds form.
- Early in the spring, as the leaves are starting to emerge, prune.
- Just above a node, prune branches back by half to a third.
- After that, prune any fragile or spindly branches.
- Minimal trimming encourages huge, strong bushes with many of tiny flower heads in H. arborescens. Hard pruning between 12 and 18 inches from the ground, or even all the way down, will result in fewer but larger flower heads that may flop if unsupported.
- For H. paniculata, remove the surrounding smaller wood while leaving the larger stems in order to establish a sturdy foundation.
Pruning may be connected to flower head size. Shoots will grow more vigorously and flower heads will be bigger and fewer with more rigorous trimming. Smaller but more numerous flower heads may result from less aggressive or tip pruning.
Consideration of hydrangeas’ mature size is the best piece of advise. Place them in a location where they won’t outgrow and won’t need a lot of pruning to keep them in check. Hydrangeas don’t need to be pruned precisely or often; as long as dead wood is removed, they will remain healthy and continue to develop and bloom.