Wet weather increases the odds of disease spores clinging to pruning tools, and diseases tend to enter lilac bushes through wounds.© Copyright 2020 Hearst Communications, Inc.In climates that have humid nights -- typically in places with moderate temperatures between 68 and 86 degrees Fahrenheit -- lilacs sometimes develop a fungal infection called powdery mildew. Lilac blight (Pseudomonas spp.) Attributes • Fragrant Flower. Attracts Wildlife • Attracts Butterflies. The chaotic climate causes brown spots to appear on the leaves, which then wilt and blacken. produce clusters of fragrant flowers that range in color from white to deep purple. Rarely to never fed on by Japanese beetles. It is extremely hardy and thrives with little care which make it a lovely shrub for a specimen planting, in masses, screens, hedges, or mixed in shrub borders. To prevent fungal infections, you can apply fungicides and antitranspirants; the latter helps keep infection at bay for up to 30 days.Washington State University, Spokane County Extension: LilacsNorth Carolina State University Cooperative Extension: Mountain GrowingUniversity of California Integrated Pest Management Program: Floriculture and Ornamental Nurseries: Powdery Mildew Why Miss Kim Lilac Flowers Are Turning Brown in June When pruning diseased lilac branches, make sure you disinfect the pruning tools before touching healthy branches or other plants to avoid spreading the infection. Trimming your lilac bushes regularly will not only keep the air flow free to prevent fungal infections but also spark new blossoms, for a greater flower yield that will grace your garden with fragrance and color.University of California Integrated Pest Management Program: Syringa, Lilac, Japanese Tree Lilac -- Syringa Spp. produce clusters of fragrant flowers that range in color from white to deep purple. It has attractive foliage, single white flowers, and makes a great informal hedge or screen. Lilacs attract just a few serious pests, most of the caterpillars and leaf miners that may visit aren’t anything to be worried about. Most cases are specific to one type of plant, such as the lilac, and won't spread to other types of plants. Many species look like cottony or waxy growths on the stems and branches of landscape shrubs. Maximum Elevation: 10,000 ft.All of our inventory is for sale only at our nursery located in Longmont, Colorado.

Lilac bushes (Syringa spp.) Common lilac grows to a height of about 20 feet (6 m.). You must have JavaScript enabled in your browser to utilize the functionality of this website.Showy Flowers, Fragrant Flowers, Attracts Hummingbirds, Attracts Butterflies
Rarely to never fed on by Japanese beetles.This hardy vigorous shrub is the white version of the old-fashioned favorite. Common lilacs are large perennial shrubs that bloom with light purple flowers.

It has attractive foliage, single white flowers, and makes a great informal hedge or screen. USDA Zone: 3-7. Persian lilac (S. persica) – This variety grows 10 feet (3 m.) tall.The flowers are pale lilac in color, and about half the diameter of common lilacs. To keep your lilac bushes healthy, you'll have to remove diseased branches, treat the infection and provide your plants with an ideal environment.University of Missouri Extension: Powdery Mildew on LilacTo prevent these diseases from affecting your lilac bushes, prune regularly to keep branches from trapping stale air.

New shoots and buds also look dark and frost-bitten. Sometimes, the leaves become misshapen from the disease, too. Common Lilac Pests. To remedy the disease, prune away infected leaves and branches, apply fungicide and increase air circulation with pruning.To help ensure your lilac bushes remain healthy, provide them with the conditions they need to support health and flowering. Though most prefer colder climates, some lilac bushes can thrive up to U.S. Department of Agriculture plant hardiness zone 8, as long as they get some winter chill.
Common White Lilac. Well-drained, alkaline soil is best, with plenty of water during the growing season. It has attractive foliage, single white flowers, and makes a great informal hedge or screen. This causes leaves to produce a pale, powdery growth before they yellow and die. Learn more about Monrovia plants and best practices for best possible plant performance.

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