Light is necessary.
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Category: water
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a traditional addition to mixed borders and foundation plantings. Learn more about bloomerang lilacs, which are a favorite choice for growing in attractive containers.
Notes on Maintenance:
Lilacs need full light and soil that drains properly; they cannot survive in damp, soggy circumstances.
After its spring bloom, the Bloomerang lilac plant produces new growth, which is when it reblooms. The plant must grow vigorously in the late spring and early summer for the finest rebloom. To achieve this, maintain it well-watered, mulched, and in direct sunlight (six hours a day at least). It is possible to fertilize it in the early spring after the ground has thawed and once more in the late spring after it has bloomed.
If you wish to prune a Bloomerang lilac, do it as soon as it finishes blooming in the spring. Never trim it back in the late winter or early spring because doing so will destroy the buds for the upcoming flowers. The Bloomerang lilac does not require pruning in order to bloom again. Although some people dislike the way they appear on the plant, giving it a light trim after flowering does eliminate the developing seed heads, giving the plant a neater appearance and stimulating more new growth for reblooming. Compared to an untrimmed Bloomerang lilac, trimming after flowering causes the rebloom to be postponed by a few weeks.
The Bloomerang lilac, like almost all lilacs, truly needs a spell of cold weather to bloom successfully. Lilacs are not often suited to warmer areas because of this. However, they are extremely resilient to cold and may survive in USDA zone 3 climates.
Fancy facts
Syringa, the scientific name for lilacs, comes from the Greek word syrinx, which means tube. The reason for this is because lilac stems have a spongy pith that can be removed to reveal a hollow tube that has historically been used to make pan-pipes.
Should Bloomerang lilacs be deadheaded?
Bloomerang lilacs bloom again on new growth, which can be stimulated by fertilization and moderate trimming. Bloomerang needs to be softly clipped right after it blooms. Additionally, it can be deadheaded, which enables the plant to concentrate its energy on growing rather than setting seed. To encourage Bloomerang to keep growing, you can also apply a fertilizer designed especially for woody plants. However, even without pruning or fertilization, the plant will continue to grow and bloom.
Which month should lilac bushes be pruned?
All lilacs should generally be clipped right away in the spring after they have finished blooming. Lilacs set their flower buds for the following year immediately after the current year’s flowers have faded, therefore trimming later in the summer or fall will result in the removal of most or all of the blossoms for the following year. The larger common lilacs as well as the shorter or more “shrub like” cultivars are all subject to this timing guideline. While the “when” of lilac trimming is rather simple, the “how” is a little more difficult. For the time being, we’ll refer to lilac pruning as either maintenance pruning or rejuvenation pruning to keep things simple.
Lilacs called “Bloomerang” actually rebloom.
Outstanding reblooming lilacs, bloomerang lilacs have magnificent bloom clusters in the spring and again from midsummer until the first frost. These blooms have a beautiful scent. The plants maintain a height of under six feet and grow in a naturally rounded manner. These dwarf lilacs can also be grown in pots and are considerably smaller than regular lilacs. Bloomerang lilacs are disease- and deer-resistant and draw butterflies and other pollinators. They can withstand the cold. They are advised for zone 3, zone 4, zone 5, zone 6, and zone 7 cultivation.
Sun and shade
Bloomerang lilac trees need at least six hours of direct sunlight each day to grow and flourish. Although they can withstand little shade, they won’t grow as many blossoms.
Soil
Trees prefer alkaline, well-drained soil that is wet. Their roots may being damaged by wet soil. The right amount of moisture can be retained and the Bloomerang can be shielded from temperature changes by a thin layer of mulch.
Watering
The blooming season is when bloomerang lilac trees will require the most water. From spring through the end of bloom season, right before the first frost, water once every ten to two weeks. Two inches of water are required for your tree to receive moist soil that is down to 12 inches.
Water during prolonged dry spells the remainder of the year if the top three inches of the soil begin to totally dry up and if the leaves begin to wilt.
Fertilizing
Beginning the second year after planting, you can fertilize your Bloomerang lilac tree in the first few weeks of spring. Apply a lilac-specific fertilizer to your plants. These often contain more phosphate and potassium and less nitrogen. A good NPK value is 5-10-10.
Pruning
You don’t need to prune your Bloomerang lilac tree. Your tree will blossom once more regardless of whether it encourages new growth. If you choose to prune your tree, do it as soon as it blooms. The flower buds will be severed if it is done in the fall, winter, or before the first bloom. Trimming will cause the rebloom to happen a few weeks later.
How much may a lilac shrub be pruned back?
Cutting no more than a third of the stems from a shrub should be the general guideline when pruning it. While a result, the plant will continue to thrive and grow new stems as the old ones bloom. Your aim is to grow a lilac bush with between eight and twelve stems, all between one and two inches in diameter, and of varying ages.
Prune Unsightly Features
Pruning should start with the removal of diseased, dead, and pencil-thin suckers and twiggy growth. Trim these all the way to the ground. These stems are typically handled by pruning shears or loppers.
Remove Any Stems Thicker Than 2 Inches in Diameter
By routinely removing entire old stems, you can keep your lilac from growing too tall. Removing only the tops of lengthy stems might cause the plant to take on an unusual, unnatural shape. A pruning saw could be essential for stems that are quite large. It can be difficult to handle thick lilac stalks.
Prune Remaining New Stems
Pruning the remaining new stems to an outward-facing bud will encourage your lilac to fill out more and develop a shrubby appearance. This entails trimming just past buds that point away from the plant’s core. A denser shrub will result from this technique’s increased branching.
Can lilacs still be pruned in July?
EVERY garden should contain some common lilacs (Syringa vulgaris) or their several lovely cousins, old-fashioned shrubs that couldn’t be easier to manage, EXCEPT IN THE WARMEST ZONES, WHERE THEY ARE PRECISELY DISPONIBLE TO BLOOM. They produce an abundance of fragrant flowers when given full sun, good air circulation (to reduce the occurrence of powdery mildew), and appropriate trimming. Lilacs that don’t blossom typically haven’t had enough sunlight or had their branches cut at the incorrect time.
The lilac creates its flower buds from late summer through fall in preparation for the following year’s show, just like other woody plants that bloom in the spring. Pruning after, say, July 4th in the North, runs the danger of decreasing the bloom the next year. If you prune in the fall or early spring, your disappointment is guaranteed.
The best way to make a lilac happy is to cut bouquets from it every spring—this is really just deadheading. The lilac is not really asking for much, but it is paying you handsomely because the trusses create opulent indoor arrangements, even though they are not necessary for its health or survival. You succeed with a little effort.
To prevent the flowers from wilting very immediately, split the bottom few inches of the stem ends with a hammer before bringing the cuts inside.
Bonus: By picking flowers, you can avoid the unsightly problem of the numerous, dried-up flowerheads that stubbornly cling on throughout the year.
Cut out any dead, damaged, or diseased wood as soon as it appears on a shrub or tree, and do the same with suckers that appear at the base (which, if the plant is a grafted one, may be sprouting from the rootstock). A lilac occasionally needs to be reshaped.
According to conventional gardening wisdom, every shrub can “remove one-third of its oldest stems to the base annually for three years to revitalize it, but I have a question: Take a close look at your lilac (or any other plants). On occasion, you don’t want to reinvent yourself (also “Before pulling out the saw, look and consider and look some more in order to adjust (rather than revitalize) the item. I enjoy how Jeff Jabco from the Scott Arboretum at Swarthmore College describes the many steps of trimming, whether it be for annual flower harvesting or more challenging projects.
Here is a link to my lilac collection. To learn how to extend the life of your cut flowers, continue reading.
How can I make my lilac bush produce more flowers?
Lilacs often bloom quite consistently, although occasionally they don’t. To ensure that yours grows, follow these suggestions:
- Usually, the issue is a lack of sunlight. Each day, the sun should be exposed for at least six hours.
- Nitrogen in excess might be problematic. Lilacs are frequently cultivated in lawns, and nitrogen-rich fertilizers are utilized to make lawns greener. For the lilac, this causes beautiful green foliage but little bloom. Avoid using nitrogen-rich fertilizers.
- Make sure you prune at the right time. Remove any dead or damaged timber in the early spring. However, avoid performing any significant pruning because you can just remove the dormant flower buds. It’s acceptable to perform more significant trimming after the flowers have faded, such as reshaping or rejuvenating an elderly bush. The old flowers can be taken out as well. Just be sure you finish it before the middle of the summer. A few of the flowers from the upcoming season may be lost if you wait too late.
Visit the Lilac Planting and Care page for a comprehensive guide to lilac planting and care.
Are lilacs suited for coffee grounds?
Lilac plants don’t require a lot of food or fertilizer. A 10-10-10 fertilizer mixture applied yearly in the early spring is what we advise. (The amounts of nitrogen, phosphorus, and potassium, or NPK as they are popularly known, are represented by the digits 10-10-10 in the formula.) Early spring fertilization of lilacs with a high phosphorus solution encourages blossoming.
Coffee grounds and grass clippings are also excellent sources of nitrogen. Use in moderation since an excess of nitrogen in the soil can lead to subpar blooms. The ideal soil conditions for lilacs are slightly alkaline (6.5–7.0 pH), wet, and well-drained. The soil may become more alkaline by adding bone meal to it. Use Miracle-Gro Shake ‘n Feed Flowering Trees & Shrubs Plant Food in the spring if you decide to feed your plant. Last but not least, lilac plants dislike acidic soil. Epsom salts can be used to encourage blossoming while the plant is dormant.
How can you ensure that lilacs bloom all summer long?
The common lilac, Syringa vulgaris, is a big bush that bears fragrant flowers in purple and white hues. Early June is normally when lilac shrubs have their brief blooming season. Pruning lilacs is one of the greatest ways to keep them blooming year after year, even though they are pretty sturdy plants on their own and will produce more blooms every year. By removing the old wood from a lilac bush, fresh blossoms can appear in the spring.
Wait till the final season’s blossoms have passed away and fallen off. As soon as the blooms of the current season fade, a lilac produces new shoots for the following spring bloom. This is why it’s crucial to prune as soon as the blooms fade.
Cut the terminal shoots and branches of the lilac bush back to the lateral bud using your pruning shears. The branches should be pruned back until they are 1/4 inch from a bud that is facing the direction in which you want the new shoots to emerge. This procedure guarantees your lilac will bloom the following year in addition to giving the bush the shape you want.
Do lilacs need to be clipped annually?
An old, overgrown lilac was one of the few plants that endured my garden restoration. The fact that it obscured my neighbor’s garage and, more importantly, sported steel-blue double flowers, led me to rescue it. Although the blossoms on this shrub were both lovely and fragrant, it was difficult to appreciate them because there were so few of them. I decided to go with a rejuvenation pruning because I knew there was no reason to give up on this long-neglected plant because lilacs can handle severe pruning.
On stems that are no older than five or six years, the common French lilacs (Syringa vulgaris cvs.) yield the most and the largest flowers. The flowers get fewer, smaller, and farther away as the stems get older. A lilac, however, may reliably produce blossoms for decades with the right trimming. The method you choose will depend on how old your shrub is. Plants are maintained annually to keep them healthy. A more drastic trimming may be necessary for lilacs like mine that have seen better days.
Lilacs should be clipped annually to encourage healthy stem development and strong growth that improves flowering. Cutting sick, deformed, and unproductive stems to the ground constitutes annual pruning. I thin and cut back some stems as well to promote healthy, evenly spaced growth. To prevent them from growing too far away from the center of the plant, I also pruned a few of the new shoots that emerged from the roots. I left a few inches between each stem to prevent crowding. Since they produce the most, I maintain the pencil-thick shoots that extend all the way to the ends of the branches. Small, twitchy growth is unproductive and won’t blossom. This growth can indicate an excess of aged, unproductive stems or too much shadow. Remove stems as soon as possible after blossoming, or in late winter if you don’t mind losing a few blooms. Cut off stems and shoots at or just below the soil line.
Dwarf lilacs rarely need pruning
Both the “Palibin” Meyer lilac (Syringa meyeri “Palibin”) and the “Miss Kim” Manchurian lilac (Syringa pubescens ssp. patula “Miss Kim”) are twiggy-habiting, somewhat small lilacs. On these types, just deadheading is needed in terms of pruning. You can prune some of the older stems as the plants get older to make place for younger, more robust stems. In contrast to regular lilacs, these plants hardly ever spread out of control. They might never need to be entirely regenerated if you only undertake a tiny amount of trimming every few years.
After the blooms have faded, deadheading, another aspect of annual maintenance, should be carried out as soon as feasible. Just above the two new shoots that slant out from the stem that stopped with the old bloom, the base of the old flower cluster should be cut off. The new shoots will develop throughout the course of the summer, produce flower buds, and culminate in a cluster of flowers the following spring. While not as crucial as the annual thinning, eliminating the old blossoms enables the plant to focus more of its energy on developing robust branches and flower buds. In June, I deadhead and thin my plants as needed.
While performing this yearly maintenance, I occasionally come upon a young, robust shoot that may be getting too tall but is still a good, productive stem and is a candidate for tipping off. I cut the wasted flower’s entire top stem back to one or two side shoots at the desired height rather of just cutting it off at the base. The side shoots that are now near the top of the bush are encouraged to grow vigorously and develop flower buds for the following year by this cut, which also aids in shrinking the shrub.
My own old, overgrown lilacs need more severe pruning. I went outside in the early spring before growth got going to get a good look at the bush. I looked to see if the plant had been grafted before I began chopping. I immediately cut it down to the ground as it hadn’t (for a grafted plant, see the panel below). I recognized that this drastic trimming would result in the plant losing part of its aesthetic appeal for a few years because lilacs bloom on the growth from the previous season. However, I was also aware that the reward—more blossoms and a stronger plant—would be worthwhile.
It’s crucial to nourish the plant after rejuvenation pruning with compost, composted manure, or a balanced chemical fertilizer and to make sure the soil pH is close to neutral, which lilacs appreciate. In the upcoming years, these supplements and some high-quality mulch will help to encourage vigorous new growth and enhanced flowering.
Has your lilac been grafted?
If your lilac has been grafted, check it out before you start making cuts to the stems. Grafting is a method of plant multiplication in which the scion, or branch, of one species is joined to the rootstock, or stem, of another species. This is typically done to enhance a plant’s look or traits. A graft union, where the cultivar’s scion wood joins the rootstock several inches above ground level, should be obvious. An apparent change in the bark from the rootstock to the scion’s bark, as well as a little swelling at the graft union, are things to watch for. If your plant has been grafted, all of your cuttings must be made above the graft union, and you must prevent shoots from the rootstock from developing into new flowering stems. Flowers of the desired shape or color will not be produced by shoots that emerge from the rootstock.