Both the adult beetles and their larvae eat the leaves of these bushes. Arrowwood viburnum (Viburnum dentatum) makes an ideal formal hedge or informal shrub. The foliage fades to yellow and the flower clusters turn reddish purple in fall. Spread a 3- to 4-inch layer of mulch around the base of the arrowwood viburnum that tapers off toward the trunk. They will tolerate a range of soils, including wet soils and acidic ones. So the best way to control them is to prune off such twigs (and properly dispose of them). Mulches of shredded pine or hemlock keep the roots cool and moist, but too much mulch piled against the trunk creates entry points for insects and diseases and encourages the bark to rot. Grown in zones 3 to 8 and reaching 4 to 6 feet high and wide, this bush, like arrowwood, is native to the eastern part of North America. They reach a height of six to 15 feet, with a similar spread. In spring, small, white flowers mature in flat-topped clusters up to 4 inches wide. How do you control viburnum leaf beetles? Most shrubs grow up to 8 feet tall and 10 feet wide. Because they will tolerate wet soils, they are one of the good choices for areas of the yard that are too wet for many other plants. Arrowwood viburnum gets its name from the fact that Native American tribes used the straight branches of this shrub to make arrow shafts. Two types of arrowwood viburnum sold at garden centers that are known for their glossy leaves are: Remove the suckers from these bushes if you wish to keep them contained within a specific area of your landscaping, else they will spread. Half that would be 5 feet. David Beaulieu is a garden writer with nearly 20 years experience writing about landscaping and over 10 years experience working in nurseries. Likewise, if you wish to control their height, prune once per year after flowering is done. Two recommended by horticulturist, Michael Dirr are 'Conoy,' which is more compact (5 to 6 feet tall, 6 to 8 feet wide) and 'Mohawk,' which is grown for its orange-red-purple fall color. They reach a height of six to 15 feet, with a similar spread. Arrowood viburnum needs consistently moist soil with average fertility but grows in a variety of soils, including alkaline. Arrowwood viburnum develops a round form with arching branches. As a native plant, arrowwood viburnum requires less maintenance than non-native plants, but it does require pruning suckers that develop from the base of the shrub. Not only is this variety beetle-resistant, but it is also very fragrant. Introducing "One Thing": A New Video Series, The Spruce Gardening & Plant Care Review Board, The Spruce Renovations and Repair Review Board. In addition, they provide the necessary cover to encourage wild bird activity in the yard, because they form dense thickets. Remove and destroy all infected leaves. Plant a few as a hedge along the house or in a naturalized area for spring interest. Plant taxonomy classifies arrowwood viburnum shrubs as Viburnum dentatum. Plant arrowwood viburnum in spring or fall in a sunny or partially shaded area large enough to accommodate the plant at maturity. This will remove the egg masses before they can hatch in spring. Arrowwood viburnum shrubs are also versatile in terms of the beauty that they offer to the landscape, as they are attractive in both spring and fall. Shoot blight causes brown, decayed spots at the leaf margins. Learn tips for creating your most beautiful (and bountiful) garden ever. As a native plant, arrowwood viburnum requires less maintenance than non-native plants, but it does requir… As is typically the case when you are trying to control a pest or disease, it is also a good idea to prune off dead branches whenever you find them. This fast-growing, deciduous shrub has showy spring flowers that bring butterflies by the thousands. Arrowwood viburnum, in fact, is one of the highly susceptible kinds. The common name, "arrowwood" viburnum derives from the Native Americans' use of its strong, straight basal shoots as arrow shafts. The glossy, green foliage produces white, flat-topped flowers in spring followed by blue berry-like fruit in the summer. In autumn, these bushes bear not only attractive, reddish fall foliage, but also bluish berries. Learn which plants thrive in your Hardiness Zone with our new interactive map! Pruning after the shrub flowers in spring removes the shrub's developing fruit. of Horticulture. The shrub produces a bluish-black drupe that matures in late summer and early fall. It is a matter of knowing their life cycle. Leaf spot causes round, water-soaked spots of the leaf surface. In autumn, these bushes bear not only attractive, reddish fall foliage, but also bluish berries. For example, if the tag on your V. japonicum gives a range of 8 to 12 feet wide, the average is 10 feet wide. 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