The most common causes of yellowing leaves on ornamental trees and shrubs such as lilac are overwatering or poorly draining soils and an iron deficiency called iron chlorosis. Overwatering results in yellowing, then browning leaves and leaf drop. Dig down 12 inches in the soil 2 feet out from the trunk of your lilac.
Lilacs are hardy shrubs, meaning that they need very little care to survive. They can withstand temperatures of -40 degrees Fahrenheit (-40 C) but may need some protection from icy winds that damage the flower buds. To help flower production, lilacs need cold winters to Read more
Lilacs should be pruned yearly to develop a good framework of stems and promote vigorous growth that enhances flowering. Removing stems may be done immediately after flowering, or, if you don't mind sacrificing a few blossoms, in late winter. Shoots and stems should be cut Read more
Too much water can diminish the oxygen in the soil by filling in air pockets with water, which chokes the roots of the lilac. Witling of the plant is the first sign that the lilac is overwatered.
The new shoots will grow over the summer, set flower buds, and be topped off with a flower cluster the following spring. While not as important as the yearly thinning, removing the old blossoms allows more of the plant's energy to be directed into growing Read more
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.
With its flower power and extended bloom time, 'Lilac Falls' is one perennial growers, landscapers and gardeners will surely fall in love with.
Lilac plants have been popular for many generations and are still a staple for many yards and garden areas. Lilacs do not contain any chemicals or toxins that will poison humans or animals and they do not irritate the skin.
Growing a lilac bush in a pot is a possibility. When selecting a lilac variety for a decorative pot, look for a dwarf variety such as our Bloomerang® Dwarf Purple Lilac. Ideal placement for potted lilacs can be balconies, rooftop patios, decks, and very small Read more
Grass clippings and coffee grounds can be used as a good source of nitrogen. Use sparingly, as too much nitrogen in the soil will result in poor blooms. Lilacs grow best in slightly alkaline (6.5 to 7.0 pH), moist, well-drained soil. Adding bone meal to Read more
Lastly, lilacs do not like overly acidic soil. One trick to encouraging them to bloom is fertilizing them with Epsom salts during the dormant period. Epsom salts are a good natural fertilizer for lilacs and tomatoes. Add about one cup of Epsom salts to the Read more
During its dormant time, the lilac bush can look dead with its scraggly branches. However, there are a few things you can do to make sure it is alive. Scratch the surface of the lilac bush's bark with a pocketknife. If you see green beneath Read more
Common Diseases of Lilacs Be on the lookout for these diseases: Bacterial blight – The bacteria Pseudomonas syringae causes early shoot and branch dieback, distorted leaves, and leaf spots that start out olive green but soon develop water-soaked areas. Those spots turn brown with yellow Read more
Winterizing Lilac Shrubs They can withstand temperatures of -40 degrees Fahrenheit (-40 C) but may need some protection from icy winds that damage the flower buds. They need well-draining soil to prevent frozen water from damaging their roots and killing the tree.
Lilacs are pollinated through both biotic and abiotic means. Lilacs can be self-pollinated when the plant contains both male and female flowers. If it is near another lilac bush, then it also can be cross-pollinated, which means the pollen sac from one plant lands on Read more
Specialized fertilizer for lilacs can help your plant produce healthy blooms. Especially if the soil is low in fertility, it's a good idea to mix in cow manure or a fertilizer low in nitrogen and high in phosphorous to promote flowering.
Exit holes are approximately 1/4 inch in length and are most common on the lower portion of the plant. These holes are often filled with frass, which is a combination of excrement and sawdust. Lilacs with heavy infestations of the lilac borer wilt, turn brown Read more
It is caused by two fungi: Verticillium dahliae and Verticillium albo-atrum. Individual branches turn brown and die suddenly due to the fungi blocking the vascular system of the branch, cutting off water and nutrient movement. Increase watering and fertilizing to extend the life of the Read more
Powdery mildew on lilacs is usually only an aesthetic issue. Powdery mildew overwinters in plant debris. If you notice powdery mildew on the foliage of your lilacs, thoroughly rake up the leaves as they fall and dispose of them to help reduce infection next summer.
Lilacs grow best in slightly alkaline (6.5 to 7.0 pH), moist, well-drained soil high in organic matter, so do a soil test before planting. If the pH is below 5.5, you'll need to add lime to increase it. Once you've achieved the right pH, it's Read more
Lilacs do not contain any chemicals that will poison animals or humans, nor do they irritate the skin. Even though lilac stems, leaves, and flowers pose no health threat to dogs, it is a good idea to keep your dog from chewing on the plant.
Carpenter ants and yellow jackets (wasps) are attracted to the lilac bush because of its sap and the honeydew, which is excreted by aphids.
In the past, lilac was ingested to rid the intestines of parasitic worms, and was also used in the treatment of malaria. In the 19th century, lilac was used by doctors to treat fevers. Some modern herbalists use the essential oil of lilac to treat Read more
Lilac produces nectar, pollen and essential blossoms for bee pollinators. The flowers tends to blossom in the spring through to summer and entice bees with their brightly-coloured petals.
Lilacs require full sunlight to flower properly. They must be planted where they will get six hours of light per day. They do not like to have wet roots, so you need to plant them in a place where the soil drains well.
Curling lilac leaves can be caused by numerous things, but certain insects such as the leaf miner insect and certain diseases such as powdery mildew are two of the most common reasons why this occurs. It could also be a sign that your lilac bush Read more
Do lilacs transplant well? The lilac shoots do. You can dig them out and replant them, and odds are good that they will thrive and grow in a new location. It is also possible to move an entire mature plant, but only if necessary.
These plants do not like wet feet and will not bloom if over watered. Too much water can diminish the oxygen in the soil by filling in air pockets with water, which chokes the roots of the lilac.
The whitish appearance is caused by the powdery mildew fungus. The white "powder" is composed of fungal structures (mycelium and spores). White spots on leaves usually start to develop in mid-summer and enlarge as the summer progresses. By late summer or fall entire leaves may Read more
Water regularly to establish a deep root system. It is best to water them at soil level and avoid overhead watering. Once established, lilacs are water wise. Water weekly in dry conditions, more often in extreme heat.
The best time to plant lilacs is in late fall before the ground freezes. The next best time to plant is in early spring after the ground thaws.
Cut back about a third of the branches. Cut away shoots growing near the ground that may be sprouting from the main trunk. In order to improve air circulation or to allow more light to filter through, trimming lilacs within the inner branches may be Read more
They can withstand temperatures of -40 degrees Fahrenheit (-40 C) but may need some protection from icy winds that damage the flower buds. They need well-draining soil to prevent frozen water from damaging their roots and killing the tree.
The lilac's heady perfume signals spring, not just to humans but to a bevy of bugs as well. This sun-loving shrub attracts not just bees and butterflies to its lavender blooms. Destructive insects such as lilac borers and leaf miners like to feast on its Read more
Lilac bushes that won't bloom could be the result of too much nitrogen. Lilacs don't typically require feeding, improper fertilizing can cause a lilac to take up too much nitrogen, which encourages the plant to green up but prevents the lilac bush from blooming.
Lilacs do best in soil that registers a pH, or acidity and alkalinity level, of between 6.0 to 7.0, which is considered neutral to slightly alkaline. They need lime only if the pH falls below this range.
Lilacs can be planted in spring once the ground has thawed or in the fall before the ground freezes. In spring, lilacs are often shipped dormant in bare-root form. The plants are not dead, only "sleeping." Upon arrival, remove any packaging from the root system Read more
Is Lilac A Tree Or A Shrub: Learn About Types Of Lilac Trees And Shrubs. Tree lilacs can grow up to 25 feet (7.6 m.) high and have a tree-like appearance, but their many stems tend to get them classified as bushes. They are not Read more
Reduce watering after flowering. Water only during extended dry periods when the top 3 inches of soil begins to dry completely. Lilacs also need watering if the leaves begin to visibly wilt during dry weather.
Best Fertilizer For Lilacs Lilac plants do not need a lot of fertilizer or feeding. We recommend a 10-10-10 fertilizer mix applied annually in the early spring. (The numbers 10-10-10 represent the amounts of nitrogen, phosphorus, and potassium – or as they are commonly known, Read more