Lilacs come in a variety of colors, including blue, violet, lilac, pink, red, purple, and white, but those that thrive in the Mediterranean environment tend to be in the blue family. According to the University of Nebraska, Lincoln, “Because of variations in the soil, location, year, and weather, different cultivars might have different bloom colors and shades. Flower color can also be influenced by the environment (hot versus cool and dry versus wet) and shade.” Gardeners in U.S. Department of Agriculture plant hardiness zones 8 to 10 will have more success with tree-form lilacs of the Ceanothus genus because the common lilac of the Syringa genus survives better in milder temps. Dark-green, glossy leaves contrast with the color of the blooms to create a fragrant and attractive upright hedge that is tall enough to be used as a natural screen or fence.
What shades of lilac are there?
Common lilacs, undoubtedly the most common kind, are prized for their vibrant and fragrant blossoms, according to Heather Trilling of Trilling Landscape Design & Build. She explains that while the flowers are normally purple to lilac, some varieties can also be magenta, pink, or white. “Plant them where they will receive at least six to eight hours of direct sunlight each day, and don’t forget to clip them after flowering. Because the roots are little, you might want to add some mulch to assist regulate the soil’s temperature changes.”
Are lilacs available in a variety of hues?
Lilacs are the ideal way to usher in spring after a protracted, gloomy winter. They have a rich smell that is admired all over the world and draw a large number of pollinators. The Syringa genus of garden lilacs contains various species, each with a variety of cultivars. They are all members of the Oleaceae family, which also includes olive, jasmine, white fringe, and ash.
With the exception of pruning to keep plants at a reasonable size, almost all of these flowering woody plants are extraordinarily hardy, simple to grow, and long-lived. Immediately the blooms have gone, pruning is carried out. When lilacs are planted in full sun, they flourish and yield the most blossoms.
Although the bloom season varies significantly depending on the species and variety, lilacs normally bloom in the middle to end of April. However, a variety of cultivars offer other color options. The rich clusters of flowers typically range in color from deep purple to pink. Lilacs are appropriate for almost any full sun garden thanks to decades of professional and amateur breeding work.
Tip
Most lilacs reproduce through sucking. Suckers are brisk vertical growths that begin at a plant’s roots or lower main stem. This can be helpful if you want the lilac to grow and develop into a thicket for screening, but if you want the shrub to stay contained, you’ll need to constantly remove the suckers.
Which lilac shade has the strongest scent?
I had the impression that lilacs were meant for me at times. Working with my grandfather, a nurseryman who specialized in these enthralling beauties, for many hours during my formative years. The tall, pink-flowered “Esther Staley” lilac that grew next to my grandparents’ back door captured my attention the most. Like some people dream of authoring the great American novel, I once fertilized that plant in the hopes of creating a fantastic new lilac. Even though my first attempt at hybridizing failed, I still enjoy breeding lilacs. I also keep an eye on the lilac collection at the Boston-area Arnold Arboretum of Harvard University.
Why are lilacs so alluring? Certainly, the approach of spring is signaled by their wonderful scent. Lilacs are exceptionally simple to grow, and they are distinctive enough to define a color and a fragrance. Additionally, lilacs now come in an astounding range of colors, habits, bloom sizes, shapes, and flowering times. Previously, they were only available in two flavors—purple and white.
There are many modern uses for these traditional plants. Species that are vibrant and fragrant may draw attention. Lilac shrubs can be arranged to create a hedge or screen. Lilacs that grow tall provide shade for a patio. Lilacs can also be underplanted with perennials that will bloom at the same time as them, such as bleeding heart (Dicentra spectabilis) or spring bulbs.
With lilacs, fragrance is the number one priority
Different lilacs have different levels of fragrance. For instance, many white lilacs only have a little aroma. Other lilacs range in flavor from quite sweet to extremely pungent. I am able to perceive pleasant smells, yet my olfactory system seems to swiftly adapt to a fragrance. This makes it challenging to discern between the aromas of various flowers. I still grin when I smell lilacs.
I started a project a few years back to keep track of which lilacs were and weren’t fragrant. I had to find willing sniffers. Now, based on other people’s noses, I can offer fragrant lilacs with assurance.
French hybrids are the best-known lilacs
All lilacs are members of the Syringa genus, which has roughly 20 species and hundreds of widely grown cultivars. Asian species predominate. None of them were born in North America. The common lilac, S. vulgaris, with its heart-shaped leaves and big blooms that bloom around the third week of May here in Boston, is significantly different from many of the species, or wild, lilacs.
The common lilac is an Eastern European native that was brought to Western Europe before 1600 and most likely from there to North America. Named cultivars weren’t created until the 1800s. Since so many of these superior cultivars originated in France around 1900, the word “Even though many common lilac cultivars were developed in other European nations or North America, the term “French Hybrid” is frequently used to refer to all of these varieties.
Other Syringa species have some highly intriguing characteristics outside of the common lilac. Each has a pleasant scent, however some are fairly distinct from S. vulgaris.
S. pubescens, a native of China, is the lilac that is typically regarded as having the strongest scent. It has tiny, purple-tinged white blooms. The aroma is sweet and spicy, extremely unlike the conventional scent “lilac aroma
An lovely native of China and Korea, S. oblata is an early bloomer and blooms approximately two weeks before the common lilac, which it mimics in appearance and aroma. This species is well recognized for being the parent of the S. hyacinthiflora early-flowering hybrid group. The common lilac serves as the other parent. S. oblata and common lilac cultivars have been crossed by breeders to produce some lovely early-flowering, fragrant selections, many of which are disease-resistant. This collection contains some of my favorite cultivars. These include my favorite white lilac, “Sister Justina,” as well as the exquisite lilac-pink varieties “Asessippi” and “Excel.” These three generate a lot of flowers from the top of the plant to the ground, although none of them have particularly large blooms. They have a pleasant scent, and in Boston, the common foliar diseases powdery mildew and leaf-roll necrosis rarely affect them.
Because of its small, intricately cut leaves that resemble ferns, another Chinese species known as S. protolaciniata (which is related to S. laciniata) is called cut-leaf lilac. Unlike the typical lilac, it has inflorescences that appear all the way down the stem from a branch terminal back approximately 18 inches, producing a large number of tiny, light-purple flowers. Some plants can grow up to 8 feet tall and 10 feet across, although they are always incredibly delicate-looking.
Some lilacs are trees
There are tree lilacs that can grow to the size and shape of an apple tree rather of just being large shrubs. They grow beautifully as shade trees, and the second season of interest is provided by their striking bark. My garden is now bordered by a sizable, untrimmed hedge of tree lilacs that was originally planted as a nursery row.
A week to ten days following the late lilacs, which bloom around a month after the early lilacs, come the tree lilacs. They have ivory blooms with a privet-like scent, which is a related relative. Compared to the Chinese tree lilac, the Japanese tree lilac (S. reticulata) often has broader, rounder leaves (S. pekinensis). Both tree lilacs have lovely bark that resembles cherry bark, but the Chinese tree lilac sheds more frequently and comes off in strips. This characteristic makes the cultivar “China Snow” beautiful. The Japanese tree lilac has a cultivar called “Ivory Silk” that is now widely accessible. In addition to being useful in gardens, it seems promising as a little street tree.
A few are short and sweet
I’ve planted a kind of S. patula called “Miss Kim” on either side of my front door. ‘Miss Kim’ is a little shrub that reaches heights of 8 to 9 feet while not being a dwarf. Its leaves acquire a port-wine hue, making it one of the few lilacs with good fall color. It blooms a week or so after the common lilac and has a profusion of deliciously fragrant blooms.
The cultivar commonly referred to as “Dwarf Korean Lilac” is another small lilac. This lilac, S. meyeri ‘Palibin,’ though a dwarf, is a cultivar of a Chinese species rather than a Korean one. Its rarely taller than 4 to 5 foot plants have tiny, circular leaves and tiny blooms. The blooms are a light purple color in the buds, but when they are fully opened, they are white, numerous, and fragrantly pleasant. This variety can be utilized to grow a short hedge.
Late-blooming lilacs have a distinctive look and smell
About a week to ten days after the common lilacs, the late lilacs blossom. As opposed to breeding within a species, most of them are the result of hybridizers crossing two or more species and choosing their strongest offspring. To produce the hybrid group S.prestoniae, Canadian plant breeder Isabella Preston initially crossed S. komarowii ssp. reflexa and S. villosa. Others have since crossed late-flowering species with Preston lilacs. However, these late-flowering lilacs don’t have the typical “lilac” appearance or scent. Sincerely, I believe that these bushes would be more well-known if they were known by a different name. Miss Canada, a true red-pink lilac, and ‘Agnes Smith,’ with white blossoms, are a couple of my favorites.
Lilac flowers range from creamy shades to purples
Although I like purple, I grow lilacs in a variety of hues, including white, blue, purple, magenta, violet, and pink. Even the yellow-lilac S. vulgaris ‘Primrose’ exists. It is a rich, creamy yellow, not the color of dandelions. S.vulgaris ‘Sensation’ is another unusual cultivar; it has purple flowers with white pinstripes encircling each petal. I grew a tall, slender variety of lilac named “Krasavitsa Moskvy,” a Russian introduction of the common lilac, next to my back door. I’m reminded of pink opals when I see its emerging buds, which later bloom into double, white blooms.
Although lilac flowers typically have four petals, many double-flowered cultivars have also been created by hybridizers. Each of these flowers has more than four petals, frequently 12 or more. These can occasionally be put hose-in-hose, which means a four-petal bloom is enclosed by another four-petal flower. Some of the more recent introductions have all of the extra petals radially arranged daisy-style in the same plane.
What qualities should a lilac have? Naturally lovely blossoms. In addition, flowers should be plentiful, fragrant, and come in the color of your choice. And being resistant to sickness is a significant bonus.
My preferred lilacs in the past had huge blossoms. Since then, I’ve come to understand that even the largest lilac flowers can only be seen up close, and that the majority of lilacs are best seen from across a garden or even a street. The quantity of bloom therefore becomes crucial, as well as presentation. You might need to smell your lilacs from a window on the second floor if all of your plant’s blossoms are at the top. Many lilac cultivars grow so tall that single-story homes cannot accommodate them.
Lilacs are easy to grow
As simple to raise as vegetables are lilacs. Their requirements are also not that dissimilar. Lilacs grow best in broad sunlight and on healthy garden soil that is neutral to slightly alkaline in pH. In these areas, they will withstand less than perfect conditions, although providing for the needs of the plant will yield better floral results.
Lilacs are typically thought of as cold-climate plants. The majority of lilacs are hardy in USDA Hardiness Zones 3 to 7, therefore when climate is an issue, heat tolerance comes into play. Gardeners in warm climates have reason for optimism. Recent selections developed at Los Angeles’ Descanso Gardens can withstand the heat and the absence of a chilling time. And the University of California, Riverside campus is home to lilac trees. I’ve heard that my old favorite, the early-flowering S.hyacinthiflora ‘Excel,’ is one of the best varieties there.
Bear in mind that lilac flower buds form in the summer before blooming when you are trimming or pruning them. Almost usually, winter pruning leads in fewer blooms the following spring. Lilacs should be pruned as soon as their blooms start to fade for the greatest flowering.
Lilac leaves frequently get powdery mildew on them, especially in humid environments. Since it appears in the late summer and early autumn, after the majority of the growth season, it is typically more of a nuisance than a hazard. Fungicides can be used to control it, however I advise cultivating the plants that are least impacted. The plants that are suggested in this article have only mild to moderate leaf disease symptoms. Site and environment, however, also influence the likelihood of infection.
Another foliar disease called leaf-roll necrosis is thought to be brought on by air pollution and can manifest hundreds of kilometres away from large cities. Similar to mildew, symptoms typically show up in the late summer and early fall. Each leaf coils upward as the leaf margins frequently die and turn dark. The symptoms may be so unpleasant that it may appear as though the plant will perish. Fortunately, at that time, lilacs have finished growing for the most part, and new spring leaves are typically healthy. Again, cultivars respond to injury in varied degrees, so look for ones that maintain their attractiveness throughout the season.
What hue are regular lilacs?
Syringa vulgaris (Common Lilac), prized for its wonderful scent, is a staple of the springtime landscape in northern and colder latitudes. One of the most effective flowering shrubs is the common lilac, which is simple to grow, hardy as nails, resistant to deer, and largely free of serious pests. This species has 2000 varieties that are tailored to the requirements of all gardening.
- Common Lilacs are deciduous shrubs with an uneven shape that are native to southern Europe. Over time, they frequently become lanky.
- The Common Lilac is the longest flowering species in the genus, typically blooming for 3–4 weeks in late spring. Its incredibly fragrant blossoms come in a variety of colors, including white, cream, rose, magenta, pinkish-purple, lavender, and purple. They can also be single or double. Before or during the maturation of the leaves, they grow in lengthy panicles up to 8 in. (20 cm) long at the tips of the branches. For the home, they make lovely cut flowers. This species’ cultivars come in early, midseason, and late midseason blooming varieties. It is feasible to have certain lilacs in full bloom for at least six weeks with careful planning.
- Despite being prone to powdery mildew, the foliage of dark green to blue-green leaves is nevertheless lovely in the summer. Ensure adequate airflow.
- The majority of Common Lilac varieties reach heights of 8 to 15 feet (240 to 450 cm), although some are medium shrubs that stand 4 to 8 feet tall or even dwarf shrubs that seldom reach heights of more than 3 to 4 feet (90-120 cm).
- Common lilacs are quite adaptable and frequently used as specimens, screens, and hedges. Small gardens and even containers can benefit from dwarf lilacs, which add beautiful color and fragrance.
- Select a location for your lilac that has good soil, drainage, and sun, and take careful care of it. Lilacs are easy to grow in fertile, humus-rich, alkaline to neutral, dry to medium, well-drained soils since they adore full sun. They prefer chalky soils and detest acidic ones. Although it may take some little shade, full sun produces the greatest flowers.
- Southern heat is not ideal for common lilacs. For the buds to grow and bloom the following spring, they require a lengthy period of winter chill. Zones 3 to 7 are suggested for this species’ growth. To compensate for warmer climates, low-chill lilac cultivars have been developed (generally to zone 8).
- Shortly after they stop blooming, lilacs start to set buds for the following year. To sustain flower production the following year, trimming should be done as soon as possible after flowering.
- The common lilac is prone to sucking. Root suckers should be promptly removed to maintain a tidy appearance and stop unwelcome colonial spread.