You may only use this archived news story for non-commercial, personal purposes. The information in the story can be out of date or replaced by new information. It is not considered a republication of the article to read or reread it in its preserved version.
Lilacs are useful, beautiful flowering plants with a variety of functions. Since both the plants and the flowers are lovely, they form beautiful border plantings, accent plants, windscreens, or floral hedges.
Lilac plants are among the toughest ornamentals while having delicate blooms. Some types are perfectly hardy in Utah and can withstand winter temperatures as low as minus 60 degrees Fahrenheit.
Alkaline soils, which are abundant here, are prefered by lilacs. They can withstand severe neglect and keep blooming for years with little to no attention. Typically, all they require to stay in check is the occasional pruning.
Although most lilac blooms are lavender, as the name suggests, they can also be magenta, pink, true lilac, blue, violet, or even white. From April through June, their several blooming seasons produce blooms and aroma. Although the majority of types have a maximum height of about 10 feet, plant heights range from 3 to 30 feet.
Lilacs come in a variety of species and varieties, making it challenging to precisely classify them. Due to extensive cross-breeding, it can be challenging to distinguish between different species. The majority of lilacs have unlobed leaves and bloom in clusters, and they are all members of the Syringa genus.
Full light and well-drained soil are ideal for lilac growth. They require a lot of space because they are huge plants. They can withstand wind and do well in open, exposed settings. Most garden soils work well for them, but they don’t like overly rich soils, so try to avoid overfertilizing to prevent masses of foliage and few flowers.
Although they are actually fairly drought tolerant and only require a small amount of watering, plants seem much prettier when they receive enough water, which both boosts the quantity and quality of their blooms.
Lilacs shouldn’t have their tops over-pruned or sheared. In most cases, pruning is not necessary during the first three to four years. Allow the plants to grow numerous branches at the base, and when they become too tall, eliminate the older branches by renewal pruning.
If the plants become too old and overgrown, remove one-third of the oldest wood annually for three years to refresh the shrub. Additionally, remove the weaker wood from the core of the bush. Lilacs should only be pruned once they have finished flowering because doing so in the spring only gets rid of the potential blossoms.
It is frequently advised, but less often done due to the labour needed, to remove dead blooms as soon as they wither in order to assist prevent the development of seed pods.
Lilacs are generally free of pests and require nothing in the way of pest care. The lilac borer is the worst pest. The aged branches are attacked by clear-winged moth larvae. Spraying the trunks with an approved insecticide can stop the borers, which become active during the first part of May, before they cause any damage.
By removing wood that is more than three years old, they can also be managed organically. As a result, the wood remains strong and straight and continues to produce copious flowers. Pruning stops significant infestations because the borers only target older wood.
Lilacs are also harmed by scale. The bugs eat the sap, puncture the bark, and weaken the plant. The most effective way to control scale insects is to use a dormant oil or to carefully monitor the pests and treat them when they are in the crawler stage.
The notched edges on the leaves of lilacs are caused by the strawberry root weevil’s assaults. As soon as the bugs become active in the early summer, spray a pesticide at the base of the plant.
One of the few significant diseases that affect lilacs in our region is powdery mildew. We typically have no control over it because it normally occurs in the late summer. An authorised fungicide can be used to manage it if it shows up early in the season.
Use lilacs as hardy yet beautiful plants that can withstand our acidic soils and chilly climates. To fix issues and enhance the beauty of your yard, choose from a variety of options.
When does lilac season begin?
A lilac in full bloom is a magnificent sight, and it smells great. Lilacs are one of the best flowering shrubs and a staple of the spring landscape in northern and colder climes. These hardy shrubs have been developed to satisfy the requirements of all gardens since they are simple to cultivate, strong as nails, resistant to deer, and largely free of main pests.
- Lilacs can bring colour and scent from April through June, depending on where you live and the types you pick. It is possible to have two months of spring blossoms by making wise plant choices, especially if the weather is chilly. However, a warm spring will cause flowers to blossom earlier than usual, cutting the blooming season by a few weeks.
- Choose Syringa x hyacinthiflora (Hyacinth Syringa) for the earliest blooms; they begin blooming in mid-spring, about 7–10 days earlier than Syringa vulgaris (Common Lilac).
- The longest flowering species is the common lilac, which can last up to a month depending on area and cultivar. It often blooms in late spring and has the biggest, most fragrant flowers.
- With varieties like Littleleaf Lilac (Syringa microphylla) and Japanese Tree Lilac, you may extend the lilac season into the summer (Syringa reticulata).
- Choose a reblooming lilac if your space is constrained and you can’t enjoy several lilac kinds. These lilac bushes do not only bloom for a brief period in the spring. They extend their stay by repeatedly blooming throughout the summer and the fall, adding beautiful colour and fragrance to the garden.
- Lilac trees grow best in the fall, just after the leaves have fallen and before the ground freezes. Lilacs can be planted in the spring before the buds open. But because fresh roots have a head start in April before the shrub starts to leaf out, lilacs planted in the fall typically have a higher chance of surviving.
Are lilacs indigenous to Utah?
He claims that lilacs are native to both Europe and Asia. The pioneers transported them across the plains to Utah after bringing them to America in the early 1700s. One of the few plants hardy enough to endure being transported on the back of a waggon was the lilac.
How often does a lilac flower bloom each year?
The late lilac is the leading contender for a long-lasting lilac that will bloom profusely throughout the warmer months of the year (Syringa villosa). As its name suggests, it blooms later than other types and produces fragrant white, pink, rosy lilac, violet, and even crimson blossoms. This lilac bush only has one summer bloom and enjoys direct sunlight.
Consider a reblooming lilac for your garden if you want consistent flowers. Lilacs that rebloom will first bloom in the spring, then rest until summertime when they will blossom once more. After their spring rest, certain types, such as the Bloomerang dark purple, will continue to bloom until the fall. Look for the Josee reblooming lilac (Syringa Josee), which intermittently flowers throughout the summer and into the fall, if you live in a warmer climate.
Are lilacs a summer or spring flower?
Lilacs are beloved for a variety of factors, such as their lovely blossoms that draw butterflies, fragrant scent, and simplicity of upkeep in the garden. Why settle for just one chance to enjoy lilac blooms when you can grow a kind that blooms again later in the season? Most lilacs only flower once a year, which is typically in the spring. A hybrid lilac cultivar called Bloomerang (Syringa ‘Penda’), which was released in 2009, begins to bloom in the spring, takes a brief pause, and then resumes in the summer and into the fall. It has gorgeous pale purple flowers that get a little bit darker during the second bloom in the summer and fall. Additionally, Bloomerang maintains a more compact size at a height and width of around four to five feet, unlike older lilacs that can develop into enormous, gangling bushes that reach a height of 10 feet or more.
Why hasn’t my lilac bush bloomed?
A. There are a number of potential causes for your lilac’s failure to blossom. Lack of sufficient sunlight is the main culprit. Lilacs (Syringa) should be planted in an area with at least six hours of direct, bright sunlight per day. They can withstand a wide range of moisture levels as long as they are grown in soil with good drainage.
If your lilac is clipped at the wrong time of year, it might not blossom for another reason. Lilacs bloom in the spring on the growth from the previous year, and soon after, they begin to form the buds for the following year. Within a few weeks of the plant blooming, pruning must be done simultaneously with the removal of the wasted flowers in order to prevent the removal of the buds for the following year. A late freeze can harm flower buds on types that bloom early.
Lilacs have a tendency to mature into overgrown, leggy shrubs with minimal foliage at the bottom. When this occurs, it might be required to prune them to within 12 inches of the ground in order to completely rejuvenate them. When the shrubs are dormant in late winter, this should be done. Lilacs benefit from this repair, although their blooming cycle will be hampered for at least one season. Lilacs can receive a rejuvenation pruning over a two-year period to stop the interruption of bloom cycles. Half of the shrub’s stems should be hard pruned the first year, and the remaining stems the following year.
Lilacs do not consume a lot of food. Excessive fertilisation, particularly nitrogen fertiliser, can frequently promote luxuriant vegetative growth at the expense of flower development. A lilac’s failure to bloom could potentially be due to its proximity to turf that receives frequent fertilisation.
Lilacs bloom twice a year, right?
Compared to other lilac trees, bloomerang lilac trees are more compact, reaching a short height of 4-6 feet tall and a spread of 4-6 feet, giving them a pleasing, rounded appearance. Their long, arched branches bear their veined leaves, which are bright green for the majority of the year until turning yellow in the fall.
The characteristic 4-petaled, 4-6 inch deep lilac-purple blooms on bloomerang lilac trees appear starting in May, cease blooming in June, and then return in July through the first frost of the year.
Specifications
With tall, arched branches, a compact and rounded shape, and rich green foliage that turn golden in the fall. Four spread petals, 4-6 inch, lilac-purple flowers that bloom in the spring and later in the summer.