Virginia Tech, Blacksburg, Virginia. Dogwood anthracnose has been reported on over 12 million acres in 180 counties (Anderson et al. The fungus has caused extensive mortality of dogwoods in portions along the The color of the lesions and symptoms of anthracnose vary depending on the tree species. 76:915-918. New growth is covered with a fine, white, powdery coating, typically on the upper surfaces of the leaves. Brown. 1994, SAMAB 1996). Dogwood anthracnose: A new disease threatens two native Cornus species. Is your Dogwood tree looking wilted, spotted, and less than stellar? 1993. At elevations below 2,000 feet, only dogwoods in cool, wet areas are dying (Anderson et al. We are not sure at what point the tree is beyond repair and should be removed. Disclaimer: Reference to products is not intended to be an endorsement to the exclusion of others which may have similar uses. Review of policy: importation of grapevine (Vitis species) propagative material into Australia. This disease may be confused with spot anthracnose (Elsinoe corni) and Septoria; both of which affect dogwood and are mainly cosmetic. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture. Dogwood twig borer, Oberea tripunctata (Swederus), Cerambycidae, COLEOPTERA. 365 (Abstr.). Dogwood anthracnose is most severe only in areas of the state that are higher than 2000 feet. Anthracnose is a group of fungal diseases that cause dark sunken lesions on leaves, stems, flowers and fruits of many deciduous and evergreen trees, including maple, white oak, elm and dogwood. 4). By 1995, the disease had been confirmed in northern Georgia (1987), western North Carolina (1988), and as far south as northern Alabama. Kousa dogwood (C. kousa) and hybrids of kousa and native dogwood (C. florida) are resistant to anthracnose and decline and should be used to replace dying trees. In the past, anthracnose was the most serious disease of dogwoods in the landscape and our forests but it is now less common. Davidson, Jr. 1979. Defoliation of affected dogwoods is common in the Southern Appalachians (Britton 1993, Daughtrey and Hibben 1994). Dogwood anthracnose is discussed in a separate publication, PPFS-OR-W-06. Scientific Name: Discula destructiva Redlin (1991) (Redlin 1991) Common Name: Dogwood anthracnose. Purple-rimmed lesions (Parham and Windham 1992) or shot holes predominate on leaves exposed to sunlight, while necrotic blotches predominate on shaded leaves (Parham and Windham 1992). Social media. It … 1992. In order to distinguish between anthracnose and other leaf spot diseases, you should carefully examine the undersides of leaves for a number of small tan to brown dots, about the size of a pin head. Dogwood anthracnose and sycamore anthracnose may occur annually and weaken or kill infected trees. 1992). ... Extension Specialist or your regional DEC office. Spring flowering of forest dogwoods enhances the aesthetic quality of forest landscapes and is important for tourism. Chellemi, D.O., K.O. 1993, Daughtrey and Hibben 1983). It was first observed in 1976 affecting a population of Cornus nuttallii in Washington state (Byther and Davidson 1979). 32:61-73. Pirone, P.P. Under ideal environmental conditions, dogwood anthracnose can be the sole cause of death. Windham. It initially shows up as leaf spots and stem cankers. Anthracnose may develop as a foliar blight, in which the turfgrass leaves are infected, or a basal rot, which attacks the leaf sheaths, crowns, and stolons of the plant. When not writing articles at work, you can probably find her winding down with a glass of wine, a book, and her two favorite neurotic cats. 2001. Kousa dogwood (C. kousa) and hybrids of kousa and native dogwood (C. … Atlanta: U.S. Department of Agriculture, Forest Service. The disease was first noticed on the p. 31–35. Plant Disease. Britton, M.T. Shade trees commonly affected by anthracnose are ash, dogwood, elm, hickory, maple, oak, sycamore, and walnut. Unlike Spot anthracnose, Dogwood anthracnose can lead to tree death under certain environmen tal conditions. Byther, R.S. I live in Southwest Detroit. Results of the 1991 dogwood anthracnose impact assessment and pilot test in the southeastern United States. Biology. U.S. Forest Service Protection Report R8-PR 23. Different fungi produce anthracnose on specific host plants. 72:199-203. This happens to be a bad year for leaf spot fungi in general including the Spot Anthracnose fungus on dogwoods due to the cool, wet spring/early summer. 1992. Young green stems and water sprouts are especially susceptible. If the dieback reaches the main trunk the entire tree can be killed. Trees that survive one or more seasons of severe anthracnose usually have swollen areas on trunks and branches where cankers were enveloped by new tissue (Daughtrey and Hibben 1994). Anthracnose, a leaf blotch caused by the fungus Gloeosporium, was becoming a common disease of flowering dogwood trees in the late 1970's in western Washington. 1290. The trees most often affected in Illinois include ashes, maples oaks, sycamore and walnuts. Anthracnose was monitored on permanent plots in the Great Smoky Mountain National Park (GSMNP) from 1988-1991 (Windham et al. This aggressive disease can result in tree death. Hibben, C.R., and M.L. At elevations between 2,000 to 3,000 feet, dogwoods in the shade are affected. As of 1999, anthracnose had killed 49.7 percent of the native dogwood trees in 24 western counties of North Carolina (USFS 2001). In 1983, the fungus associated with the anthracnose on C. nuttallii was identified as a species of Discula, and flowering dogwood (Cornus florida) and Japanese dogwood (Cornus kousa) were noted as minor hosts (Salogga and Ammirati 1983), but C. Florida is now known as a major host that is impacted by this disease. : anthracnose ( revision date: dogwood anthracnose extension ) Use Integrated Pest Management Asheville! Should also be removed Elsinoe corni ) and Septoria ; both of which affect dogwood and mainly. In eastern hardwood forests: what is known to infect the `` flower '' ( white )! A large number of plots with severe epidemics ( more than 90 percent of the dogwoods have died heavily! Wood under the bark will appear dark brown in contrast to healthy wood... 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Department of Agriculture, forest Service strategic partnership called N.C, 2008: in Illinois include ashes maples... Bracts ) is more serious than spot anthracnose, consult your local Extension. Leaves in the ‘ stellar Series ’, which names like Constellation, Celestial or... Destructiva Redlin ( 1991 ) ( Redlin 1991 ) common Name: Discula and... Dogwood ’ s susceptibility to disease shade trees commonly affected by anthracnose are ash, dogwood, elm hickory. Affected dogwoods is common in the Southern Appalachians, mortality is most severe on young.! Noticed a widespread and rapid deterioration of flowering dogwoods in cool, wet areas are dying ( Anderson al! A triangle of three black spots is visible on the tree species and!, D.H. Marx, and influence numerous ecological relationships ( Daughtrey et al your dogwood that. Stellar Pink rot and leaf & twig blight be suffering from dogwood anthracnose in eastern forests... 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