Why is part of my viburnum dying?
David Jones
Published May 28, 2026
Why is part of my viburnum dying?
The most prevalent diseases affecting viburnums are fungal diseases of the foliage. Powdery mildew affects many types of plants, from ornamentals to vegetables. Downy mildew causes leaves to develop splotched areas which die and shrivel in spring. It is most common when the weather is wet.
How do you revive viburnum?
Immediately after it flowers next spring, remove dead stems and suckers, and prune out one-third of the oldest stems. Continue removing the oldest stems each spring until the plant has an attractive and natural-looking shape.
What diseases do viburnum get?
Viburnum species may become diseased with powdery mildew caused by the fungus Erysiphe viburni. The occurrence and spread of this disease is favored by a combination of warm days, cool nights, and humid conditions but is inhibited by rain. Powdery mildew is worse on plants in the shade.
Why is my viburnum leaves turning brown?
Among the most common causes for viburnum leaves turning brown or black are leaf spot diseases. If the brown leaves on viburnum are caused by leaf spot disease or anthracnose, you can treat the plants with fungicides available in commerce. For example, treat anthracnose by spraying the leaves with a copper fungicide.
What is the lifespan of a viburnum?
Healthy Characteristics. Sweet viburnums should live between 50 and 150 years, according to the Cal Poly San Luis Obispo Urban Forest Ecosystems Institute. Unless it’s aged, your plant should have shiny leaves and fragrant spring flowers followed by prolific fruit.
Why is my viburnum Brown?
Among the most common causes for viburnum leaves turning brown or black are leaf spot diseases. Don’t panic. Leaf spot fungal diseases, as well as the fungal disease anthracnose, usually do not do lasting harm to your plants. Rake up and burn the brown viburnum leaves that have fallen.
Should I cut off brown leaf tips?
Yes. Remove brown and dying leaves from your house plants as soon as possible, but only if they’re more than 50 percent damaged. Cutting off these leaves allows the remaining healthy foliage to receive more nutrients and improves the plant’s appearance.
Why are my viburnum leaves turning brown?
What is the lifespan of a bush?
The life span of most small trees and shrubs is about 7 to 10 years. With proper maintenance, many of them can live a bit longer than this. Still, it’s good to keep this rule of thumb in mind: For about the first five years small trees and shrubs will grow to fill in their assigned areas.
Why are the leaves on my viburnum plant turning brown?
A variety of leaf spots are caused by the fungi Cercospora spp., Phoma spp., and Phyllosticta spp. These fungal leaf spots on viburnum typically are angular to irregular-shaped, and the leaf tissue in the spots is sunken and dry. Spots may begin small, but enlarge or merge , and may be reddish to grayish brown.
What kind of diseases can you get from Viburnum?
Leaf spots and anthracnose are fairly common on viburnum foliage, but these foliar diseases are not usually serious. Prevention & Control: Many foliar problems can be prevented by keeping leaves as dry as possible.
What kind of Viburnum has white and pink flowers?
Korean spice is a diminutive species of viburnum with white or pink flowers that add a spiced scent to your landscape. This deciduous species provides changing colors, too, in the fall when its large clusters of waxy flowers with bright red berries fade to black.
When does Viburnum ×rhytidophylloides Alleghany start to bloom?
Viburnum ×rhytidophylloides ‘Alleghany’ The U.S. National Arboretum presents Viburnum ×rhytidophylloides ‘Alleghany’, an outstanding hybrid viburnum. The dark green, leathery foliage is an excellent foil for a host of small, yellowish-white flowers in late May and early June, as well as brilliant red fruit in September.
What are the spots on the leaves of Viburnum?
These fungal leaf spots on viburnum typically are angular to irregular-shaped, and the leaf tissue in the spots is sunken and dry. Spots may begin small but enlarge or merge and may be reddish to grayish brown.
When does powdery mildew appear on a viburnum plant?
Powdery mildew of viburnum primarily affects young leaves and shoots. Affected plant tissues develop a powdery white to light gray growth of fungal mycelia. The fungus is mostly found on the upper leaf surface but also may be found on the lower leaf surface. The disease typically appears in the summer and reaches its peak in late summer.
Leaf spots and anthracnose are fairly common on viburnum foliage, but these foliar diseases are not usually serious. Prevention & Control: Many foliar problems can be prevented by keeping leaves as dry as possible.
Are there any new viburnums that are doing well?
However, other new shrubs and perennials planted close by are generally doing well – although there was some leaf scorching to some – but none of these are affected as badly as the viburnums.