Once established, limelight hydrangea trees can thrive in a variety of soil types and are drought-tolerant, making them low-maintenance and practically hassle-free.
Sun and shade
Depending on the climate zone they are cultivated in, Limelight hydrangea trees require different amounts of sunlight. They require moderate shade and around four hours of direct, unfiltered sunlight every day in zones 7-8 that are warmer. They benefit most from full sun, or at least six hours of daily direct, unfiltered sunshine, in the cooler zones 4-6.
Soil
Although limelight hydrangea trees may grow in a wide range of soil types, they prefer an acidic to neutral pH. No of the soil type, it needs to drain well. Wet feet are not good for these trees. The pH of the soil does not influence the color of the blooms like it does with certain other kinds.
In cold locations, cover the roots of your Limelight hydrangea with a 2-3 inch layer of mulch to protect them from the winter chill.
Watering
Water the soil every week to ten days to keep it consistently moist. Only water your Limelight hydrangea when the top two inches of soil are dry. Do not overwater. You can check for moisture by sticking your index finger into the nearby dirt.
Pruning
Every year, before the emergence of new growth, you should prune your Limelight hydrangea tree. This can be done in late winter or early spring. To promote new growth, cut your Limelight hydrangea back annually by a third of its total height. Remember that Limelight hydrangeas only produce flowers on fresh wood, so avoid mistakenly removing any flower buds.
Trim any branches that you see that are diseased, damaged, or dead all year long.
Should the fall be the time to prune Limelight hydrangeas?
Time period. Pruning the Limelight hydrangea is only permitted in the fall, winter, or early spring when the shrub is not yet blooming. Only moderate winter temperatures, such as those found in USDA plant hardiness zones 7 and 8, are ideal for fall pruning.
In Ontario, when should hydrangeas be pruned?
Early in the summer, oakleaf hydrangeas typically bloom earliest. Above a pile of huge, textured leaves in the shape of oak trees, they bear large, white, cone-shaped blooms on robust, cinnamon-colored stems. In the fall, the flowers frequently take on pink or crimson hues before turning rusty brown for the winter. Oakleaf hydrangeas typically do not rebloom. While mature oakleaf hydrangeas in bloom are a joy to behold and will be a pleasure for decades to come, they do grow more slowly than other varieties.
Because oakleaf hydrangeas establish their flower buds for the following summer in the leaf axils of the stems the summer before they bloom, they place their flower buds on ancient wood. The enormous terminal bud at the top of the stem and several smaller buds in the leaf axils down the stem are already formed for the following year in the close-up photo above, which was taken in October.
The majority of shrubs that flower on old wood need to be clipped as soon as the flowering is over. However, because they finish blooming so late in the season, hydrangeas that grow on old wood don’t have enough time to grow back and develop flower buds for the next year when they are pruned after they have flowered. Because of this, we advise against pruning this variety of hydrangea other than to remove any branches that are entirely dead in the spring after the plant begins to leaf out. All oakleaf hydrangeas, non-reblooming bigleaf and mountain hydrangeas are a few examples of hydrangeas that only bloom on ancient wood.
When the plants have gone dormant in late fall or in the early spring, hydrangeas that bloom on new wood can be cut without harm. There is no chance of damaging the flower buds if you prune in the fall or spring because the flower buds for the following year won’t form until late spring of the same year they bloom. If you enjoy the wintertime appearance of dried hydrangea blossoms in your garden, keep them on and prune them in the spring. Prune them in late fall or early winter if you live somewhere with a lot of snowfall or if you prefer a neater appearance in winter. Examples of hydrangeas that only bloom on new wood include panicle and smooth varieties.
Hydrangeas that rebloom have flowers on both old and fresh wood. Because of this, it can be challenging to prune them at a period when no blossoms would be lost. Reblooming cultivars should be pruned similarly to hydrangeas that bloom on old wood, so once the plant begins to leaf out in the spring, you should only need to remove a few (if any) dead branches. Reblooming bigleaf and mountain hydrangea types are two examples.
In general, it is okay to prune hydrangeas that bloom on new wood up to one-third. It is permissible to prune up to two feet from the top and sides of a hydrangea that is six feet tall, for instance. For two reasons, we do not advise trimming more severely than 30%:
- By further pruning it, too much of the strong structure that supports the plant’s erect posture is lost.
- The plant must maintain a sufficient amount of leaves to produce enough food to sustain the root system.
Make your pruning cut immediately above a group of substantial, healthy leaves. A branch can be totally removed if it is dead or broken. Don’t prune if you’re unsure! No hydrangea needs to be pruned in order to flourish and expand.
It’s a popular misperception that hydrangeas can be pruned to keep them shorter all year long. Avoid doing it to avoid potentially removing the flower buds. Your hydrangeas will grow back to their previous size or even larger because trimming encourages new growth, thus it is ineffective to prune them to lessen their height. Instead, move your overgrown, dormant hydrangea to a different location in the early spring and swap it out for a kind that naturally remains shorter.
Does my limelight hydrangea need deadheading?
To keep your hydrangeas looking their best and promote the development of new flowers, deadhead regularly during the blooming season.
But in mid- to late-fall, stop deadheading hydrangea shrubs, leaving any spent blooms in situ. This not only adds beauty to the winter landscape but also guarantees that the buds that will bloom the following spring are not removed.
How should Limelight hydrangeas be pruned for the winter?
Simply remove one-third of the Limelight Hydrangea’s overall height when pruning it. Before new growth appears, prune your Limelight in the late winter or early spring. You don’t want to possibly take off any flower buds for the future season because this shrub blooms on fresh wood. Additionally, you can remove any unhealthy or dead branches as needed throughout the year. By being pruned, this shrub develops a sturdy base and upright branches that are able to support all of the big flower heads. Additionally, it stimulates the plant to focus more of its energy on producing flowers, which bloom from June to September.
This shrub can also be trained to grow into a tree. Your neighbors will be amazed when they see this unusual creature! We especially enjoy seeing these developed into trees in garden planters since it simultaneously provides height and beauty.
Should I trim my hydrangea to prepare for 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.
In Ontario, how are hydrangeas cared for?
First and foremost, you need to be aware that not all hydrangeas are hardy. I’m referring specifically to the mophead hydrangeas (hydrangea macrophylla). The gorgeous blue and pink hydrangeas that can be found all across the Lower Mainland are called mophead hydrangeas.
Hydrangeas of the smooth and panicle types (hydrangea paniculata) overwinter successfully here (hydrangea arborescens).
Flowers Cone-shaped flowers are supposedly characteristic of panicle hydrangeas, but I only sort of agree with that description. According to me, depending on the variety, the cone shape might be either quite clear or highly ambiguous. The size of the flower also varies widely.
The flowers of smooth hydrangeas are larger and dome-shaped. The flower size is more constant (between 6 and 12) “amongst variations (measured in diameter).
Hardy hydrangeas come in countless colors of white, pink, and lime when it comes to flower color. The tones and/or colors of the blooms frequently change as they become older.
Smooth hydrangeas have green, flexible, generally softer stems than panicle hydrangeas, which have reddish, woody, robust stems. This is because smooth hydrangeas sprout from the ground every year, but panicle hydrangeas regenerate on growth from the previous season.
The leaves of smooth hydrangeas are lighter green and softer, whereas those of panicle hydrangeas are often darker green and more leathery.
The need for trimming differs significantly between panicle and smooth hydrangeas.
The branch tips of panicle hydrangeas only need a minimal annual trimming. (If your ancient panicle hydrangea is no longer flowering nicely, that is the exception.) The hydrangea will then require “inspiration” to bloom once more. In the early spring, simply prune a couple of the oldest stems as close to the ground as you can.)
Every year in the early spring, smooth hydrangeas require severe pruning. Reduce all stems to around 3-6 inches “from the ground. Because of this, if your intended planting site is prone to significant winter snow loads, smooth hydrangeas are a preferable option.
Depending on the type, a mature hardy hydrangea can range in size from 3′ × 3′ to 10′ x 10′.
Hydrangeas can be planted in the following ways, as shown in the photo gallery below:
- shrub used as a focal point or in combination with other perennials and shrubs
- as a planting of a foundation (meaning against the foundation of a house)
- as a planting campaign
- like a hedge
- like a tiny tree (see note below)
Note: Hydrangea trees are actually hydrangea plants that have been fashioned to seem like trees. Selective pruning for several years is required for this process. Any hydrangea can be trained into a tree if you have the patience to do so (otherwise, ready-made tree hydrangeas are available.)
Although hydrangeas are simple to grow, they do require wet soil. Hydrangeas will express their dislike of being dry. Your hydrangea should flourish if the soil is adequately prepared, mulch is added around the base of the bush, and thorough, infrequent watering is practiced.
Shade tolerance varies among different hydrangea cultivars. In general, hydrangeas can thrive in locations with at least three hours of sunlight per day.
Because hydrangeas flower a lot, fertilizing them is a smart option. Use just fertilizer for transplants and bone meal during the first year. To maximum bloom production after that, apply a slow-release fertilizer once a year.
I haven’t met a hydrangea that I didn’t enjoy, but the following is a good representation of the kinds that are out there:
You’ll agree that this hydrangea’s name is fitting once you see it in bloom. Bombshell is covered in so many flowers when it is in bloom that its leaves are hardly visible. Indeed, compared to other panicle hydrangeas, it produces the most flowers.
White blossoms gradually turn to delicate pink as they ripen. Bombshell has a longer flowering time and begins blooming earlier than the majority of panicle hydrangeas.
Bombshell is a compact and well-kept tiny hydrangea that matures to a height and width of about 3′.
The reason Invincibelle Spirit made the list is because it is the first (and only) smooth hydrangea with pink flowers. The huge, dom-shaped blossoms appear in the middle to end of the summer.
A medium-sized hydrangea, Invincibelle Spirit eventually grows to be 3–4′ high and broad.
The new and better version of “Annabelle” is called “Incrediball.” (Annabelle was found in 1910 in Anna, Illinois.) Despite being beautiful, Annabelle’s flowers frequently flop, giving the plant a disorganized appearance. If an Annabelle is hit by a lot of rain, it will appear more like a tornado landed on it.
Incrediball, on the other hand, has exceptionally strong stems that maintain the flowers upright. The really shocking part is that Incrediball’s flowers are much larger, with a maximum diameter of 12″! When fully opened, the blossoms turn white before turning back to lime green.
Little Lime is the hydrangea I’m currently obsessed with. Last season, they were on show in a stunning way at our front entry, and I couldn’t take my eyes off of them. I approached numerous times to take in the sight of their captivating, beautifully colored petals.
White, lime, pink, and other colors are all present in the thick flower clusters of the Little Lime plant. In terms of blossoming, it is very productive.
Because Quick Fire blooms one month earlier than the other hardy hydrangea varieties, it is a prized variety.
Quick Fire is shaped like a free, airy flower. The blossoms start out white, then turn pink, and then intensify into cherry red.
We only started growing Fire Light in 2014. However, it merits note due to the distinctive flower’s color and shape.
Fire Light flowers start out white and turn a rich pink color as they age, just like most pink hydrangeas. The panicles of the flowers have a very distinctive, dramatic shape.
Hardy hydrangeas are one of our region’s best flowering shrubs. Give any hardy hydrangea type you come across that I haven’t listed a try. You might really like it.
To explore many more hydrangeas, including those that will be available in 2016, visit the Proven Winners website. I’m eager to give them all a try!