Ceanothus, often known as California lilac, is a colourful, lovely flowering shrub that is native to North America and can be found growing wild all across the west. Although the California lilac, which belongs to the Syringa genus, is not a real lilac, it does produce incredibly fragrant blossoms from late spring to early summer. This plant is generally trouble-free and simple to grow. Continue reading to find out where to grow California lilacs and what particular maintenance requirements this wonderful plant has.
During what season do lilacs bloom?
Did you know that the National Gardening Bureau has designated 2022 as the “Year of the Lilac”? They have a sweet, eerie aroma and are among the easiest shrubs for your landscaping to maintain that bloom in the spring. Find out how to plant, nurture, and prune your lilacs.
About Lilacs
Syringa vulgaris, or common lilac, is prized for its tenacity, dependability, and scent. Lilacs are so hardy that they can live for more than 100 years and frequently outlive the houses they were planted near.
This tiny, multi-stemmed deciduous shrub (or tree) has approximately ten canes and blooms at eye level. The height of a common lilac can range from 8 to 12 feet, depending on the cultivar. The aromatic flowers attract butterflies and make good cuttings.
There are lilac types that come in white, cream, and even pink and yellow, though the blooms are typically lilac/purple in hue (ranging from very pale to extremely dark). Flowers can be solitary or double in number.
Lilacs bloom in northern states from mid- to late spring for around two weeks. However, there are lilac varieties for early, mid, and late seasons that, when cultivated together, guarantee a consistent bloom for at least six weeks.
Lilacs do best in soil that is fertile, humus-rich, well-drained, and neutral to alkaline (at a pH near 7.0). Add compost to your soil to improve it if it is in bad condition. (Learn more about adding amendments to the soil and getting it ready for planting.) Lilacs don’t enjoy having their feet wet and won’t blossom if they are kept too moist, so make sure the planting area drains well.
Lilacs should be planted in full sun, which is defined as having at least six hours of sunlight each day, for the finest blooms.
How to Plant Lilacs
- If you’re fortunate, a friend may offer you a sucker, or offshoot, of the plant’s root system. The sucker will first appear pitiful, but all you need to do is dig a hole, fill it with soil, and then insert the sucker. water next, and then wait. You’ll be rewarded with enormous, fragrant blossoms in 4 or 5 years.
- Lilacs purchased from nurseries can also be planted easily. If the plant was cultivated in a container, spread its roots out as you plant it; if it was balled or burlapped, gently remove the covering and any rope before doing so. Set the plant 2 to 3 inches deeper than it was while it was growing in the nursery and cover the roots with topsoil. in water Then add more topsoil to the hole to finish it.
- Depending on the kind, place multiple lilac bushes 5 to 15 feet apart.
- Apply a layer of compost under the plant each spring, followed by a layer of mulch to keep moisture in and weeds under control.
- If the weekly rainfall is less than 1 inch, water during the summer.
- If lilacs receive too much fertiliser, they won’t bloom. In the late winter, they can manage a few 10-10-10, but no more.
- Spread some lime and thoroughly composted manure around the base of your lilac bush once it has finished blooming. Remove suckers while you form the shrub by trimming it.
Pruning Lilacs
- Since lilacs blossom on old wood, it’s important to prune in the spring immediately following their bloom. You risk removing the wood if you prune later in the summer. A word of advice: It’s time to prune if your lilac flower clusters are getting smaller!
- After bloom each year, cut away any dead wood. Remove the oldest canes by pruning (down to the ground). Take out the tiny suckers. Reduce weak branches until a robust shoot remains. Reduce tall canes to eye level.
- Remove one-third of the oldest canes (down to the ground) in year one, half of the remaining old wood in year two, and the remainder in year three if your lilac is very old and in poor condition. Cutting the entire plant back to a height of approximately 6 or 8 inches is another option for elderly lilacs. Although it sounds dramatic, lilacs are remarkably resilient. This option’s drawback is that it takes some time for the hair to grow back. The lilac will grow back bursting with blooms, so there will be less work and more reward.
- It is important to understand that extreme trimming causes bloom loss for one to three years. For these reasons, a smart pruning programme gives the bushes yearly attention in an effort to avoid making dramatic and severe cuts.
The Syringa vulgaris kind of lilacs is the most widely grown and fragrant:
- Try the double magneta variety “Charles Joly” for an early bloom.
- Lilacs in the middle of the season include “Monge,” a deep reddish purple, and “Firmament,” a delicate blue.
- Miss Canada, a reddish pink, and Donald Wyman, a solitary purple, are two late-season beauties.
Syringa x hyacinthiflora, an early-flowering lilac cultivar, opens 7 to 19 days before those of the common lilac. Hummingbirds and butterflies are attracted to its fragrant blossoms.
The cutleaf lilac, a fragrant pale lavender, is one of the common lilacs that may flourish as far south as Zone 9. Common lilacs appreciate cold weather. The beautiful shrub Syringa patula ‘Miss Kim’ has light lilac-blue flowers that eventually become white.
There are tiny kinds for gardeners who simply don’t have the space for the conventional larger lilacs, particularly those in urban settings. Even in a container on your balcony or patio, they will grow.
- ‘Baby Kim’ has a lovely rounded shape, only grows 2 to 3 feet high (and 3 feet wide), and has purple flowers that draw butterflies. Hardiness from Zones 3 to 8 extended.
- Compact lilac ‘Little Lady’ (Syringa x) has dark pink buds that open to lilac-pink flowers and grows to be 4 to 5 feet tall and wide at maturity. Zones 2 to 7 are tough.
- Syringa vulgaris cultivars “New Age Lavender” and “New Age White” were developed for mildew resistance and are quite compact, growing from 4 to 5 feet tall and wide. Hummingbirds and butterflies are drawn to their fragrant blossoms. Zone 4 hardy.
California lilacs bloom how frequently?
The shrubs can remain in bloom for around six weeks, and the small blooms grow in enormous clusters (some cultivars have an even longer bloom period). Species and cultivar differences affect the length and timing of blooms. Some bloom in the late spring and summer while others do so in the summer and fall.
How are lilacs cared for in California?
Until the plant gets established, water it well during dry weather. Add a general fertiliser in the spring along with an organic mulch. Tie evergreen limbs and branches to the supports of the wall.
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.
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.
When ought my California lilac to be pruned?
In the spring, Californian lilacs can provide an abundance of stunning blue flowers, bringing life to any garden and having a relaxing effect.
You can relax in your garden and enjoy the peaceful, cooling effects of the stunning blue flowers that Californian lilacs produce in the spring if you have a Ceanothus plant there. These magnificent bushes might help you control your fury thanks to their profusion of lovely flowers.
Ceanothus species and related cultivars number over 50. They are primarily indigenous to western North America, particularly the California coast. The bulk of Ceanothus you see has blue flowers, while some varieties also produce white or pink flowers. The tiny flowers are grouped together in cymes, which resemble thimbles.
Californian lilacs make good shrub borders, but they really flourish when they have the warmth and security of a south-facing wall. Additionally, some species and cultivars with low growth rates make great ground cover plants. E.g. var. repens of Ceanothus thyrsiflorus
The majority of ceanothus thrive in the UK winters, however some are a little more delicate and may have had individual shoots harmed by the cold. It is crucial to match the climate and topography of the plants’ natural habitats when cultivating flowers to ensure profuse flowering. Mature plants thrive well on dry soils and have some drought resistance if they receive adequate watering in the early years.
Deep green, glossy, oval leaves are the norm for Californian lilacs. However, they do suffer when grown in shallow, chalky soils that are frequently iron-deficient, resulting in yellowing of the leaf.
The early flowering types of Ceanothus that bloom in May have blooms on the wood from the previous year, making pruning them simple. These need to be pruned as soon as they flower, trimmed to the desired form, and any stray branches should be removed.
The blossoms on the current year’s growth of Californian lilacs that bloom later in the year, some in the autumn and early winter, like Ceanothus ‘Autumnal Blue,’ should be clipped in the early spring.
Give yourself a Ceanothus if you don’t already have one. They are reliable, trouble-free, and incredibly inexpensive to maintain!
Do lilacs grow in Los Angeles?
I noted a few weeks ago that I had never seen a gorgeous, healthy lilac outside of the frigid high desert or Descanso Gardens, which is located in a cool canyon bottom populated with oaks, in a piece about other back-East species.
I speculated, “Perhaps someone will give me a photo of their lilacs, and I’ll start to believe, but until then, I’ll keep thinking that lilacs look fine next to a granite doorstep in New Hampshire but are a bad option next to a d.g. (decomposed granite) path in Southern California.
South Pasadena’s Donna Potts responded to my challenge by saying:
“I would want to take up the gauntlet after reading your lilac challenge on Sunday.
She provided pictures of a bush that was in full bloom, and I could see the top of a palm tree peeping over the carport in the background, so I knew the pictures weren’t secretly shot in New Hampshire.
She said, “I have a fantastic lilac in my typical California yard, but no decomposed granite path. Although I’m not familiar with the precise kind, they have a lovely scent.
“You are more than welcome to visit and verify for yourself that we can grow anything in Southern California.
Although South Pasadena is not that far from Descanso Gardens, the photo she enclosed is quite lovely.
But the next letter I read came from a Rancho Palos Verdes reader. Lilacs have been blossoming in their garden for the past 15 years, according to E.A. Trabin.
The Descanso peninsula, which has a completely distinct coastal climate, is far away from the Palos Verdes peninsula.
Another image of a young plant in bloom was provided by the Turski family in Venice, another coastal community.
Pete Colato writes from Valencia in the Santa Clarita Valley:
“I read your post while sitting in the garden and taking in the full bloom of my neighbor’s lilacs. I am familiar with lilacs because I grew up in the East, and these are just as lovely as any I’ve seen there.
More images of a bush in full bloom that was almost as tall as their chimney were sent by Larry and Helen Merken in Chatsworth.
Ruth Midyett also shared images of a large, attractive bush that is 25 years old from West Covina. Additionally, readers from Glendora, Reseda, and Thousand Oaks shared pictures.
Nancy Lewis also shared a picture of a lilac bush covered with blossoms from her home in Arcadia, close to the Los Angeles County Arboretum. Her plant is the original “Lavender Lady” Descanso hybrid.
These hybrid lilacs are said to perform the best in Southern California of all lilac varieties. White Chiffon, Spring in Descanso, Mrs. Forrest K. Smith, Descanso Giant, Sylvan Beauty, Pride of the Guild, and King of Descanso are more Descanso hybrids suitable for temperate areas.
Since “Lavender Lady” is the variety most frequently found in nurseries, I think most of the lilacs in the photographs were either that variety or one of these others.
Descanso Gardens responded to my article quickly as well. The volunteer curator of the lilac collection, Rudy Schaffer, asserted that watering, rather than weather, was to blame for my friend’s lilac’s poor performance, which was stated in my article.
He said that stopping watering mild-climate lilacs like “Lavender Lady” after September 15 and allowing them survive only on rainfall is the secret to having blossoms on them. Only plants that have been planted for two or three years are affected by this.
This dormancy-inducing drying out results in good flowers. When the first spring leaf or flower buds appear, you should start watering again.
Because of this, if you’re planting a fresh lilac, keep it away from shrubs or lawns that require irrigation in the winter.
He offered more advice on how to maximise the benefits of a lilac in Southern California:
* To prevent seed pods from forming, remove the old flower spikes after the lilacs have finished blooming. If they do, the lilac will have a poor bloom the next year.
* When plants older than three years have finished blooming, prune and thin them. He added that pruning improves flowering as well.
* Remove twiggy growth to start the trimming process. After that, remove any growth that has emerged from the ground and is no thicker than a pencil. Additionally, remove a couple of the oldest, tallest canes—those that emerge from the ground and are at least 3 to 4 inches thick—by pruning them.
This will encourage the young, robust canes that will produce more blossoms while preventing the plant from growing too tall (so you can no longer smell the flowers).
* To save summer moisture and keep the roots cool, you should additionally treat plants with a 10-10-10 fertiliser or a fertiliser of a similar type around mid-May. After that, cover the plants with a thin layer of mulch.
* In late June, fertilise one more time with a 6-10-10 mixture (if you desire additional growth) or a 0-10-10 mixture or something comparable.
At Descanso Gardens, lilac enthusiasts can pick up a fresh handout on growing and caring for lilacs in Southern California.
I’ll tell my friend who was attempting to plant lilacs in Beverly Hills about this, and I guess I’m now a believer.
The winning argument was made by Monrovia Nursery Co. I had always thought that the Oregon facility of this wholesale grower was where the lilacs were grown. But Azusa is where the nursery grows its lilacs.