Do not plant too deeply. It is an ideal shrub for hedges and groupings along landscape borders, and it is more disease- and insect-resistant than other Prunus species. Prune out any dead or dying branches. Laurels are a popular plant for screens, privacy hedges and general landscaping. They are more susceptible when they come out in May/June depending upon temperature and there may be several generations per year. Check the soil moisture of new plants weekly and water deeply. Cherry laurel is hardy in U.S. Department of Agriculture hardiness zones 7 through 10. The best time for when to plant cherry laurel is in the fall. Cut infected areas down to the healthy tissue and leave the roots exposed during summer months. She is co-founder of On Fiction Writing, a website for writers. It is helpful to be aware of these issues before planting them. Their spores are dispersed by rain. A: Shothole is a common bacterial disease on âOtto Luykenâ, âZabalâ and âSchipâ laurel plants. Cherry laurels make their best growth in moist, well-drained soil in full sun to partial shade. Laurel Leaf "Shot Hole" The leaves of the cherry laurel tree (Prunus laurocerasus) are prone to a harmless condition called Laurel shot hole. Leaves bear several teeth near apex as the leaf narrows. Our Arborists report seeing Shot Hole Fungus on lots of Cherry Laurels in this area. The foliage may look unhealthy and sparse over a period of several years as leaves eventually die and drop. They are popular evergreen screening and foundation plants, deer-resistant, and pretty tough once established. New leaves are usually unaffected provided your tree is receiving adequate water, nutrition and care. ( Log Out / The fungal disease is caused by the fungus Raffaelea sp.. They can have multiple issues that are attributed to environmental, climate, or site conditions. Change ), You are commenting using your Twitter account. Hardy to zone 5, according to the USDA plant hardiness map, cherry laurel shrubs produce beautiful and aromatic white flowers in the spring. It is closely related to Cherry Laurel with the same kinds of flowers and fruit, and similar evergreen leaves that are only a little glossy. Laurel are very easy to grow and, generally, disease-free. We receive numerous questions about problems with these shrubs. While laurel shrubs grow vigorously and tend to choke out most problematic plant invaders that might interfere with their health, they can be susceptible to infections and diseases. Disease. Cherry leaf scorch and leaf spot are diseases of Prunus spp. This site uses Akismet to reduce spam. Check the soil drainage and make sure there are no downspouts dumping water in the site. Bright-green foliage has a scent reminiscent of maraschino cherries. Photo: Elizabeth Bush, Virginia Polytechnic Institute and State University, Bugwood.org. Armillaria shoestring root rot also produces a white, felt-like growth between the bark and the wood at the base of the tree and the roots. Laurels are among the few evergreen species with very broad leaves that are hardy in cold climates. Photo: University of Maryland Extension / Ask an Expert, White Prunicola Scale on Cherry Laurel: Photo: University of Maryland / Ask an Expert. The spots drop out, leaving circular holes in the leaf. Laurel wilt is a highly destructive disease of the plants in the laurel family. English Laurel, often referred to as Cherry Laurel, is a large evergreen shrub or small tree. Prunus laurocerasus (Cherry laurel) varieties and Prunus lusitanica (Portuguese laurel) are more resistant than any other Prunus. Dig the planting hole deep enough to accommodate the plant with the top of the root ball level with or slightly above ground level. They can be used as shrubs or grown taller as small trees. If the infestation is not heavy, use a soft brush to brush away the white scale covers from the branches. Botryosphaeria fungi colonize dead wood and then spread to healthy wood. Laurel trees are a unique specimen. At the edges, the fungus has a fan shape and forms blackish, stringy strands between the bark and the wood. It is sickeningly fragrant and free-flowering, even in heavy shade. White Prunicola Scale is most commonly found on trees in the genus Prunus including Japanese flowering cherry and Cherry Laurel. and diseases: No: Comments: This shrub has a refined growth habit and is a vigorous grower and very hardy. Miller holds a diploma in social services from Clarke College in Belleville, Ontario. When you see crawlers sticking to the tape, that is a good time to apply horticultural or insecticidal soap according to label directions. The best way to prevent infection is to ensure your cherry laurel is in good health, and avoid plant stress and injury. The tree can reach 40 feet in height with a 25-foot spread though is often seen smaller when grown in the open. Cherry Shot Hole Disease Symptoms. What can I doâ¦ A dwarf, compact shrub, maturing at half the size of the regular Cherry Laurel, making an outstanding hedge or screen that tolerates heat, drought, and wind. A healthy cherry laurel will usually grow through a fungal leaf spot infection. It grows naturally around the Black Sea, in Turkey, Greece, and in Iran. No, Windex is not a pesticide and should not be used in this manner. By Marian Hengemihle, Maryland Certified Professional Horticulturist, Consultant, University of Maryland Extension Home & Garden Information Center, Category: Lawn & Garden Cherry Tree Problems. When to Plant Cherry Laurel. In trade, it is often observed as 'Skipensis' and pronounced as Skip Cherry Laurel. Before planting, if the roots are root-bound within the container, make several cuts along the outside of the root ball and tease the roots out so they can establish into the surrounding soil. Mulching helps prevent the disease spores from splashing up from the â¦ Shot hole fungus, also known as shot hole disease, is a serious fungal disease that creates distinct BB-sized holes in leaves. Both container- and field-grown laurel can develop symptoms. Updated: July 31, 2016. It has denser flowering raceme's than 'Otto Luyken'. Laurel wilt. Feed and water your tree to promote good growth and healing, but avoid watering the exposed portions of trunk and roots. They do well in sandy soils, clay soils, and alkaline and acidic soils. Honey-colored mushrooms may also develop around the base of the tree. Armillaria shoestring root rot is a fungal infection of cherry laurels caused by several species of Armillaria fungi. Please send your questions and clear photos to the Home & Garden Information Center’s Ask an Expert service. No chemical controls exist for Botryosphaeria dieback. These shrubs are related to peach, plum, and other stone fruits. Cherry-laurel will create a dense screen or hedge with regular pruning, but is also attractive when allowed to grow naturally into its upright-oval, dense form. If you notice problems with your shrubs during the growing season, we are happy to help diagnose what you are dealing with. Diseases of Prunus Caroliniana. Here are some of the most common problems with cherry laurels in the landscape and what you can do. A: First, there is a lot to like about cherry laurels (Prunus laurocerasus). Common cherry tree problems include rot, spot and knot diseases. Soil . The tree usually maintaiâ¦ Photo: University of Maryland Extension / Ask an Expert. Remove all dead branches in the center of the shrub to allow better aeration. Fungicides containing difenoconazole, myclobutanil, tebuconazole or triticonazole may be effective in controlling powdery mildew infections. Avoid overhead watering and remove affected leaves to encourage new growth, but avoid heavy pruning. Affected plants or hedges look unsightly. This plant blooms in the spring. © Copyright 2020 Hearst Communications, Inc. Prunus caroliniana, known as the Carolina laurelcherry, Carolina cherry laurel, cherry laurel, or Carolina cherry, is a small evergreen flowering tree native to the lowlands of Southeastern United States, from North Carolina south to Florida and westward to central Texas. Your plants' leaves will looks a bit like swiss cheese, with lots of round holes punched into them. There are many types of the cherry laurel plant to choose from, ranging from compact shrubs to small tree forms. Shake out all fallen and diseased leaves from the shrub and destroy them. Enter your email address to follow this blog and receive notifications of new posts by email. With the rainy, warm weather weâve been having this season Shot Hole Fungus is running rampant. Brown spots on your cherry laurel’s leaves indicate a fungal infection by the leaf spot fungi Stigmina and Eupropolella. Cherry-laurel, a dependable, easily grown, North American native, is densely foliated with glossy, dark green, evergreen leaves.