To learn more about this shrub, click here.

Sign up for our newsletter. With a light infestation, their feeding causes leaves to have silvery speckles or streaks. Leaf spots start as small, pale green circular spots, and eventually become light brown or reddish brown with age.

Possumhaw viburnum shrubs are especially at home in a carefree natural planting. Both the lower and upper leaf surfaces must be sprayed for good control. Roses, apples, peaches, plums, apricots, poplars, willows, and escallonia are commonly infected.Infected branches die back and when the branch dies small fruiting bodies appear as brackets on the dead wood. Root weevil larvae cause damage by chewing and girdling roots, and damage usually begins in spring to early summer and continues through the growing season. If Armillaria is responsible for the plants decline, white felt-like fungal growth can be seen under the bark if the bark is carefully peeled back. Spots may begin small, but enlarge or merge , and may be reddish to grayish brown.

When planting viburnum or other nearby plants, allow for adequate plant spacing. Leaf beetles can skeletonize viburnum leaves quickly and efficiently. Leaf spots and anthracnose are fairly common on viburnum foliage, but these foliar diseases are not usually serious. The soap spray must contact the pest to be effective, and may require three sprays at 5- to 7-day intervals. Prune in summer or early autumn if possible, when the weather is warm and dry. The lower surface is pale green with hairs. Privacy Policy Why do viburnum leaves turn brown? Downy mildew disease is different from powdery mildew in that the fungal growth is observed on the lower rather than on the upper leaf surface.

Read here for growing info. Disinfest pruners between every cut with a 70% alcohol or 10% bleach solution.

Stem: Stem Color: Brown/Copper Gray/Silver Plant growth may become stunted, and the foliage may become pale green or yellow. To see these fast-moving pests, you need a magnifying lens. The infected areas redden and then turn brown as the leaf tissue dies. Join My Kiwicare for tips, tricks and seasonal reminders. Often, pests or disease are to blame when a viburnum has yellow leaves. Thrips are slender, dark-colored insects, with fringed wings. Any thrips present will move around on the paper. Most often this disease is found on trees and shrubs, such as oak, pine, rhododendron, and dogwood, but hundreds of plant species, including viburnums, are susceptible. Adults are less than 1/16-inch in length. Prevention & Control: Water shrubs weekly during the growing season if insufficient rainfall occurs (see HGIC 1056, Watering Shrubs & Trees). Although sulfur is sometimes used for powdery mildew control, it is not recommended for sulfur-sensitive plants, such as viburnums. With varieties suitable for USDA hardiness zones 2 to 9, you can find a variety to suit any garden need: wet or dry, sun or shade, natural or formal, shrub or tree, native or exotic. Both adults and nymphs (immature insect stage that resemble the adult, but are smaller) feed by scraping surface cells to suck plant sap. Prevention & Control: Algal leaf spots are common on several ornamental shrubs and trees, including camellias, magnolias, azaleas, aucubas, gardenias, and rhododendrons. Leaf spot is not uncommon with Laurestinus viburnum, and is usually due to moist, damp conditions. Remove and burn or bin the affected leaves and any badly affected branches. These large shrubs look like they could require a lot of maintenance, but Japanese snowball care is really quite easy. With severe infestations, leaves and flowers are stunted and distorted and may turn brown and die. ).Jack T. Reed, Mississippi State University, Bugwood.org. By Mary H. Dyer, Credentialed Garden Writer, By Bonnie L. Grant, Certified Urban Agriculturist. Growing sweet viburnum bushes adds the delightful element of fragrance to your garden. Prevention & Control: Light infestations of scale can be scraped off by hand. Plants that are not well taken care of can occasionally develop viburnum diseases, primarily fungal issues.

Learn more here. Upon entry via a wound, the fungus kills cambium and sapwood tissue, causing sunken dead areas called cankers. As an added bonus, Southern Arrowwood shrub care is a breeze.

This member of the large viburnum family offers showy, snowy spring blossoms with a very appealing scent.

Cleary’s 3336 Turf & Ornamental Fungicide. For sweet viburnum information, click here.

Learn to identify these insect pests and eliminate them from the landscape with the viburnum borer treatment tips in this article. Repeat spray three times at 5- to 7-day intervals. With over 150 species of viburnum shrubs and heights between 2-25 feet, there?s a variety that can fit into any landscape. This information is supplied with the understanding that no discrimination is intended and no endorsement of brand names or registered trademarks by the Clemson University Cooperative Extension Service is implied, nor is any discrimination intended by the exclusion of products or manufacturers not named.

Check surrounding hedges and other shrubs/trees for silvered trees and silver leaf fruiting bodies and remove and burn. Pest Advice

The adult weevil is a black, wingless weevil about ⅜-inch long. The leatherleaf viburnum's creamy white blossoms never fail, even when the shrub is planted in the shade. Avoid pruning in wet weather when the risk of silver leaf infecting wounds is much greater.

To sample for thrips on viburnum foliage, hold a sheet of stiff white paper under injured leaves, and then shake or tap the branch. These fungal leaf spots on viburnum typically are angular to irregular-shaped, and the leaf tissue in the spots is sunken and dry. The cause of the unhealthiness or death may be difficult to determine, as similar symptoms may be caused by environmental factors, such as weather stress or a general lack of plant care. Repeat this application after 10 days to better control the crawlers, adults, and eggs by smothering them. When a shrub dies from Armillaria root rot, the large roots in the vicinity of the trunk as well as the trunk itself should be removed and destroyed. If chemical control is needed, most fungal leaf spots and anthracnose can be controlled with sprays of fungicides containing chlorothalonil, thiophanate-methyl, myclobutanil, or mancozeb. This pathogen will overwinter in leaf spots.

Silver leaf disease is caused by the fungus. Flower thrips (Frankliniella spp. Learn more about them here. Mites have needle-like piercing-sucking mouthparts. They feed by piercing plant tissue and sucking plant sap. Soaps and oils must be sprayed onto the aphids to be effective. Growing viburnums include fragrant springtime blooms, attractive autumn and showy berries that welcome songbirds to your garden.

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