N
InsightHorizon Digest

What month do lilacs bloom

Author

Andrew Mccoy

Updated on April 04, 2026

Although many lilac varieties bloom in midspring, commonly around May, the “Excel” cultivar blooms as early as February or March. Combine this early-blooming lilac with other, later-blooming varieties to extend the flowering period from late winter through late spring, or two near-continuous flushes of blossoms.

How many times a year does a lilac bloom?

Reblooming lilacs will bloom once in the spring, take a rest period and then bloom again in midsummer. Some varieties, like the Bloomerang dark purple, will continue to bloom into the fall after their spring rest.

How do I get my lilac bush to bloom?

  1. Usually, insufficient sunlight is the problem. A minimum of six hours of sun is needed each day.
  2. Too much nitrogen can be a problem. Often lilacs are planted in the lawn and fertilizers used to green up lawns are high in nitrogen. …
  3. Make sure you prune at the right time.

Do lilac bushes bloom more than once a year?

Do lilac trees bloom more than once a year? Most do not, but the Bloomerang lilac tree blooms in spring, takes a pause in early summer, then blooms again from summer all the way to the first frost of the year.

Why are my lilacs blooming in September?

Generally, they bloom a year later when triggered by the weather. “It’s actually a hormonal response to the weather — the temperature and the light,” Weisenhorn said. With the cooler late summer and warmer September, Weisenhorn suspects the flowers confused the fall for spring.

How long do lilac bushes live?

How long do lilac bushes live? They’re super-hardy and may live 75 years or more! Just look at old, abandoned farmhouses where the lilacs still bloom vigorously.

How do you keep lilacs blooming all summer?

While lilacs are quite hardy plants on their own and will produce more blooms every year, pruning lilacs is one of the best ways to keep them blooming year after year. Pruning a lilac bush removes the old wood and facilitates new blooms in the spring.

How do you keep lilacs blooming?

To improve the flowering of lilacs, keep the grass from growing around them. A 16- to 24-inch circle of landscape cloth placed around the bushes and covered with bark or stone will keep the grass down. Force a winter bouquet from cut branches of lilac. Bruise the cut ends and set them in water.

When should you cut back a lilac tree?

As a general rule for all lilacs, they should be pruned immediately after they’re done flowering in the spring. Since lilacs set next year’s flower buds right after the current year’s flowers have faded, pruning later in the summer or fall will result in cutting off many or all of next year’s flowers.

What does the lilac symbolize?

Because lilacs have one of the earliest bloom times, they symbolize spring and renewal. Lilacs also symbolize confidence, which makes them a traditionally popular gift for graduates. There are many meanings that lilacs have that can best be classified by color. White lilacs symbolize purity and innocence.

Article first time published on

Why is my lilac tree not flowering?

Other Reasons Lilac Bush is Not Blooming Lilacs want full sun, which means about six hours a day of sunshine. … Over-fertilized lilacs will grow lots of luscious greenery, but won’t give you the flowering you’re hoping for. Lilacs don’t require much in the way of fertilizer except for, perhaps, a light feeding in spring.

Why didn't lilacs bloom this year?

The most common cause is lack of adequate sunlight. Lilacs (Syringa) need to be planted in a location that receives at least six hours of strong, direct sun per day. … Another reason why your lilac may not bloom is because it is being pruned at the wrong time of the year.

Is Miracle Grow good for lilacs?

Lilacs grow best in slightly alkaline (6.5 to 7.0 pH), moist, well-drained soil. Adding bone meal to the soil can make it more alkaline. If you choose to feed your plant in the spring, you can use Miracle-Gro® Shake ‘n Feed® Flowering Trees & Shrubs Plant Food. Lastly, Lilac plants do not like acidic soil.

Why are lilacs dying in Wisconsin?

Bacterial blight, also known as blossom blight or shoot blight, is a common and often serious disease of Chinese, Japanese, Persian and common lilac, as well as walnut, apple, pear, plum and cherry. White flowering varieties of common lilac are most susceptible to the disease.

Do lilac bushes bloom in October?

This October bloom itself won‘t hurt the plant, but it may make it less likely to have strong, rigorous, or bountiful blooms next spring when we’d expect to see them! So enjoy them for now and watch next spring to see how your lilacs are doing! Sharing is caring!

Why are lilacs blooming in Wisconsin?

Madison’s rainfall rate is about 12 inches behind normal so far this year. A dry but humid growing season encouraged leaf diseases that caused many lilacs to enter early dormancy, Stevens said. When it started raining again this fall, many of the plants began to grow again and flowers opened back up.

Where is the best place to plant a lilac bush?

Where to Plant Lilacs. The ideal spot to plant lilacs is in an area with full sun (at least 6 to 8 hours per day)—give them too much shade and they may not bloom. Lilacs also like slightly alkaline, moist, well-drained soil.

How fast does lilac grow?

The lilac is a deciduous, multi-stemmed shrub with an irregular, rounded outline. It is fast growing when young, but slows to about one foot a year with age.

Should you cut off the dead flowers off a lilac tree?

Removing the dead flowers from your lilac bush will encourage more blooms the following year. The important thing when trimming off your flowers is that you simply cut off the spent flowers—don’t worry about any surrounding stems. … To deadhead lilacs, simply snip the dead flower, leaving the stem and leaves in place.

Which is the most fragrant lilac?

The lilac usually considered the most fragrant is a Chinese native—S. pubescens. It has small, white flowers tinged with purple.

Do lilacs need full sun?

Lilacs require full sunlight to flower properly. They must be planted where they will get six hours of light per day. Also, they do not appreciate being planted near other trees, which could hinder their development.

How do you make lilacs happy?

Let your lilac bask in the sun and it will be happy! Lilac plants prefer full sun and need at least 6 hours of it a day to grow well. When choosing a place to plant your lilac, make sure it is somewhere with enough sun. While lilac bushes need room to grow, but they can grow in a garden setting as well.

What is the difference between a lilac bush and a lilac tree?

To clear up any confusion, there is no difference between a lilac bush and a lilac tree, they are the same plant just called by different names. … Some lilacs flower two weeks earlier, including Syringa x hyacinthiflora varieties and these are often referred to as early flowering lilacs.

Is there a lilac that blooms all summer?

Bloomerang Purple lilac is the original reblooming lilac. It blooms in spring along with other lilacs, takes a brief rest to put on new growth, then blooms again from mid-summer through fall. … It doesn’t only bloom once in spring – it also blooms summer through fall.

What flower represents death?

Chrysanthemum: In America, this gorgeous flower has many meanings, but it is often used as an expression of support or an encouragement to “get well soon.” In many countries in Europe, the chrysanthemum is placed on graves and viewed as a symbol of death.

What does a lilac tattoo mean?

A lilac tattoo is a wonderful idea that could hold more than just one meaning within its beauty. No matter the color of lilac flower its symbolism almost always has love and romance associated with it. … In the Victorian Age, it would refer to “old love,” and widows were the ones who wore them.

What your favorite color says about you lilac?

Having either purple or violet as your favorite color means you are sensitive and compassionate, understanding and supportive, thinking of others before yourself – you are the person others come to for help – being needed motivates you but sometimes people take advantage of you.

How long does it take for lilac to flower?

Age: Lilac plants need time to grow before they begin flowering. So, if you have a very young plant, it may not be mature enough to bloom. Most plants start blooming after three or four years but some may take as long as six or seven. The blooms for the first few years will be sparse but should increase with time.

Do Lilacs bloom on new or old wood?

Lilacs are shrubs that bloom on old wood. This means that the flower buds for the next spring’s blooming period are set on the growth produced during the prior year. When you prune off this growth, you lose the flower buds—and, by extension, the flowers that they would have brought.

How do you make a lilac Fuller?

Get rid of dead, broken or diseased stems first, as well as any weaker branches. In addition, cut branches to prevent rubbing or crossing. Remove old stems that are thicker than two inches. This prevents your lilac from growing too tall and encourages the growth of young shoots.

Do lilacs need a lot of water?

Watering your lilac plant is recommended once every 10 to 14 days from from spring until blooming ends. Lilacs respond best to deep, infrequent watering. Make sure that your planting area or container drains well. These plants do not like wet feet and will not bloom if over watered.