Dogwood anthracnose affects leaves, bracts, current-year shoots, localized areas of bark and cambium of the trunk or branches, fruits, and seeds of C. florida (Britton et al. 1996), Fungal disease of flowering dogwood (Cornus florida) and Pacific dogwood (Cornus nuttallii) trees (Daughtrey et al. Dogwood anthracnose: understanding a disease new to North America. It grows up to a height of 4 to 15 feet, and its subgenera are Swida. 1993. p. 42. Effects of tree placement on dogwood anthracnose severity and lesion growth rates in urban landscapes and wooded areas. The species reproduces vegetatively by rooting along nodes and the lower stems ( EPPO, 2009b ). 1995). Plant Disease. Stems show similar symptoms as seen in Figure 5 with a canker at the base of an epicormic branch and Figure 6 showing conidia (spores) exuded from a dead twig infected with Discula destructiva. Images of dogwood anthracnose infections. 1983. Maps can be downloaded and shared. Lantana . Federal government websites always use a .gov or .mil domain. Mycologia 83(5):633-642. Dogwood fruits, rich in fat and protein, are a preferred food for turkeys, bobwhite quail, squirrels, rabbits, and deer, as well as numerous non-game species of birds. Dogwood; Hebes; Lavender (good for butterflies) Mahonia; Currants (Rubus) Thyme; Viburnums; Are there any other shrubs I should avoid? Canadian Forest Service. 1996. 1996). Pirone, P.P. Red-osier dogwood is by far our most common native dogwood. There is only one genus of dogwood in Canada — Cornus — but its species come in a variety of shapes and sizes. Montgomery, and K. Langdon. 2 and 3), (2) shot holes, (3) necrotic blotches at the leaf tip or along the blade periphery, or (4) blight of the entire blade (Hibben and Daughtrey 1988) (Fig. Ornamentals Northwest Newsletter. 1992. Plant Disease. nov., cause of dogwood anthracnose. Hibben, C.R., and M.L. Salogga, D.S., and J.F. Emerald Ash Borer. 8 p. Windham, M.T., M.E. Images of dogwood anthracnose symptoms. Seattle Public Utilities (Washington). University of Georgia. Oregon State University. Dutch Elm Disease. Hibben. The dogwoods are distinguished from other flowering shrubs by the clusters of small, 4-petaled white flowers and opposite (except for 1 species) leaves that are toothless and have prominent, arching, lateral veins. USDA. C. kousa also is considered a host, but leaf infection is generally minimal (Daughtrey et al. Phytopathology. University of Arkansas. 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). Shrubby Cornus alba , C. sericea and C. sanguinea are grown for their vivid winter stem colour, while shrubby C.mas (the cornelian cherry) is grown for its winter flowers and summer fruits. ... Bill was responsible for our invasive species strategy and deployment while I was at The Nature Conservancy. Northern Swamp Dogwood. associated with anthracnose of dogwood in the Pacific Northwest. 1983. Unfortunately, much of the lake is occupied by the two invasive species: Brazilian waterweed and parrotfeather. 1994). The Plants Database includes the following 29 species of Cornus .Click below on a thumbnail map or name for species profiles. Species include the common dogwood Cornus sanguinea of Eurasia, the widely cultivated flowering dogwood (Cornus florida) of eastern North America, the Pacific dogwood Cornus nuttallii of western … Bugwood Wiki. Britton, and W.T. Cornus florida (Flowering Dogwood) Cornus florida (flowering dogwood) is a small, low-branched tree with spreading horizontal branches. Current Genetics 39(5-6):346-354. Of the 17 species of dogwood native to North America, the four most common garden types are native flowering dogwoods, Pacific dogwood, Cornelian cherry dogwood and kousa dogwoods. Daughtrey, M.L., C.R. Dogwood anthracnose in northeastern United States. 2001. Dogwood trees are dependent on surface moisture because root networks don't penetrate to water reserves that may lie deeper beneath the slightly acidic well-draining soil they prefer. Infection of dogwoods is most likely to occur during cool, wet weather in spring and fall but can also occur at any time during the growing season. 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. 1992. Like the Kousa, Cornelian Dogwoods form a canopy as they grow, making them great for shading and decoration, especially in the garden. It produces an abundant display of yellowish-green flowers in spring and pinkish-red berries in summer. Dogwood - A Plant for all Seasons No matter where you live in Canada, chances are there is a dogwood for you. Leaf symptoms on C. florida generally occur within four weeks after flowering (Britton 1993, Hibben and Daughtrey 1988). The New York Times. 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. 77: 34-37. Landscape, Nursery, and Urban Forestry Program. Although the origin of dogwood anthracnose is unknown, the results of DNA analysis combined with its rapid spread have led many to conclude it was introduced (Daughtrey et al. Select the non-indigenous forest pest to view maps depicting state and county distribution. References Cited 1992, Hoffard et al. Annual Review of Photopathology. FS. It is native to Eastern North America and is hardy in USDA zones 4 to 8. Phytophthora alni. Both Flint Hills National Wildlife Refuge's wetlands and uplands have been impacted by invasive plant species. 32:61-73. 2015-41595-24254 from the USDA National Institute of Food and Agriculture. Through educational outreach, strategic planning and active management we are … Figures 2-4. Davidson, Jr. 1979. Understory forest dogwoods are more prone to infection than trees growing in full sunlight. Found 59 Resources Page 1 of 1. Control and eradication, a primary management goal, is an ongoing challenge. 1988. Cooperative Extension of Suffolk County. 1992. Windham, and S.C. Redlin. 4). Before sharing sensitive information online, make sure you’re on a .gov or .mil site by inspecting your browser’s address (or “location”) bar. Center for Invasive Species and Ecosystem Health. 365 (Abstr.). The decline of dogwood populations resulting from dogwood anthracnose has several serious impacts in the Southern Appalachians. Leaf spots vary according to light exposure. 77:34-36. Beyond this aesthetic loss, the absence of native dogwoods and their fruits is probably detrimental to wildlife. Mycologia. Stem dieback from dogwood anthracnose (, Terrestrial (land-dwelling) invasive species, Aquatic (Water-Dwelling) Invasive Species, Public Outreach and Education Materials (Invasive species), Climate Change Impacts on Forest Diseases. 1996. These were also the species on which the responsible agent for the disease was discovered in 2003 in a nursery in Lombardy, Italy, and in a private garden in Germany. A species profile for Dogwood Anthracnose. Windham. Forest Service Protection Report 26, p. 19. Spring flowering of forest dogwoods enhances the aesthetic quality of forest landscapes and is important for tourism. Redlin, S.C. 1991. 1992). 16 of 20. Virginia Tech, Blacksburg, Virginia. ... 12 Species of Dogwood Trees and Shrubs 7 Species of Daisies for Your Flower Garden 18 Species of Holly Plants Disease severity within infected areas also has increased rapidly. 1994, SAMAB 1996). In the GSMNP, it is estimated that more than 90 percent of the dogwoods have died in heavily shaded cove and alluvial forests. Plant Disease. Large C. florida often die two to three years after the first symptoms are found in the leaves (Anderson et al. University of Kentucky. 80:349-357. USDA Forest Service. Dogwood Lake is a 3.5-acre waterbody in Trumbull, Connecticut. 1993, Daughtrey and Hibben 1983). Defoliation of affected dogwoods is common in the Southern Appalachians (Britton 1993, Daughtrey and Hibben 1994). Amylostereum complex. University of New Hampshire. Leaves are dark green with bright yellow flowers. 2001. Daughtrey, M.L. Hoffard, W.H., D.H. Marx, and H.D. 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