Drought and winter injury appear to increase susceptibility (Daughtrey and Hibben 1994). University of Arkansas. The disease kills dogwoods of all sizes, but it is most severe on young seedlings. Distinctive white flowers, 3″ in diameter, bloom mid-April to mid-May. Hibben, K.O. Swank. 8 p. Windham, M.T., M.E. An organization’s internal relationships and balance affect how the organization relates to its clients and the external environment. Daughtrey, M.L. Visually appealing and magnets for wildlife, these plants are bound to please both the gardener and naturalist in you. Both Flint Hills National Wildlife Refuge's wetlands and uplands have been impacted by invasive plant species. Daughtrey, J.L., C.R. In the Southern Appalachians, mortality is most likely at elevations above 3,000 feet. Beyond this aesthetic loss, the absence of native dogwoods and their fruits is probably detrimental to wildlife. Emerald Ash Borer. Fall color is purplish to red. The health of southern forests. Cooperative Extension. Results of the 1991 dogwood anthracnose impact assessment and pilot test in the southeastern United States. Daughtrey. Green Gardening Program. Website developed by The University of Georgia - Center for Invasive Species and Ecosystem Health and the National Park Service in cooperation with the Invasive Plant Atlas of New England, Invasive Plant Control, Inc., USDA Forest Service, Invasive species is the bane of parks across the city, said Chris Frelke, the city’s director of Parks, Recreation and Community Facilities. nov., cause of dogwood anthracnose. Nov., Cause of Dogwood Anthracnose. It produces an abundant display of yellowish-green flowers in spring and pinkish-red berries in summer. Chellemi, D.O., K.O. USDA. 2001. Cornus florida (Flowering Dogwood) Cornus florida (flowering dogwood) is a small, low-branched tree with spreading horizontal branches. For this reason, ornamentals grown in open, sunny sites are often disfigured without being killed. Britton, M.T. Dogwood; Hebes; Lavender (good for butterflies) Mahonia; Currants (Rubus) Thyme; Viburnums; Are there any other shrubs I should avoid? Center for Integrated Plant Systems. Atlanta: U.S. Department of Agriculture, Forest Service. National strategy for special forest products. 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. Dogwood Lake is a 3.5-acre waterbody in Trumbull, Connecticut. Southern Region. Redlin, S.C. 1991. Discula destructiva. Some, like sericea lespedeza, honeylocust, johnson grass, sumac, dogwood, and eastern red ceder, are present in some areas in large, monotypic stands. Produced by: USDA, FS, Forest Health Protection, and its partners. Leaf symptoms on C. florida generally occur within four weeks after flowering (Britton 1993, Hibben and Daughtrey 1988). Dogwood anthracnose has been reported on over 12 million acres in 180 counties (Anderson et al. Hibben, K.O. Flowering Cornus (dogwood) trees are grown for their showy coloured bracts in late spring and early summer. Apply the mulch of your choice such as bark chips 3 to 4 inches deep over roots to hold in moisture. 1996). Windham. Pirone, P.P. Dogwood is a small shrub, widespread along the woodland edges and hedgerows of southern England. Byther, R.S. Disease severity within infected areas also has increased rapidly. Through educational outreach, strategic planning and active management we are … 1996). University of Georgia. Large C. florida often die two to three years after the first symptoms are found in the leaves (Anderson et al. Dogwood is a small broadleaf shrub, typically found growing along woodland edges and in hedgerows of southern England. Their loss could hasten soil acidification, reduce nutrient availability, and influence numerous ecological relationships (Daughtrey and Hibben 1994). Dogwood - A Plant for all Seasons No matter where you live in Canada, chances are there is a dogwood for you. Discula destructiva is a fungus that has caused serious losses to North American native flowering dogwood (Cornus florida) and other native and introduced species (C. nuttallii and C. kousa, respectively) of dogwood found in the natural environment and in ornamental plantings. Distribution of dogwood anthracnose in the Great Smoky Mountain National Park and effects of proximity to water to plots and plot aspects on disease severity. Mature trees can grow to 10m. Center for Invasive Species and Ecosystem Health. 1994. 1994. Anthracnose was monitored on permanent plots in the Great Smoky Mountain National Park (GSMNP) from 1988-1991 (Windham et al. Regeneration can be eliminated in some areas. Figure 1. and R.M. Bugwood Wiki was created to be a resource for those needing information on Integrated Pest Management, Invasive Species and … Defoliation of affected dogwoods is common in the Southern Appalachians (Britton 1993, Daughtrey and Hibben 1994). It grows up to a height of 4 to 15 feet, and its subgenera are Swida. Ophiostoma ulmi. Two years later, Pirone (1980) noticed a widespread and rapid deterioration of flowering dogwoods in New York and Connecticut (Fig. Dogwood anthracnose in northeastern United States. associated with anthracnose of dogwood in the Pacific Northwest. 2001. Alder Dieback. Dogwood anthracnose and its spread in the South. Hibben. Dogwood anthracnose. Agrilus planipennis. Want create site? Found 59 Resources Page 1 of 1. There is only one genus of dogwood in Canada — Cornus — but its species come in a variety of shapes and sizes. 1980. 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. Influence of site factors on dogwood anthracnose in the Nantahala Mountain range of western North Carolina. In early autumn, it … Proceedings of the Sixth Annual Regional Dogwood Workshop. Overall, vigorous trees tend to be less damaged than weak trees. Find Free Themes and plugins. 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). Dogwood anthracnose: understanding a disease new to North America. Natural Resources Canada. Table 2 identifies those invasive species commonly used in gardens or landscaping, the corresponding alternative plant category, as well as some additional alternatives. The New York Times. Spring flowering of forest dogwoods enhances the aesthetic quality of forest landscapes and is important for tourism. Blighting commonly occurs throughout the canopy of understory C. florida, or within the interior canopy or on epicormic branches of exposed trees. Unfortunately, much of the lake is occupied by the two invasive species: Brazilian waterweed and parrotfeather. Plant Disease. Bugwood Wiki. Effects of tree placement on dogwood anthracnose severity and lesion growth rates in urban landscapes and wooded areas. p. 31–35. Leaves are dark green with bright yellow flowers. Disease severity in the South seems to be more intense at higher elevations. Invasive Species. The latter two are introduced species that have earned a place in American gardens because they are more disease resistant than native species. Oregon State University. Amylostereum complex. National Invasive Species Information Center, Alien Forest Pest Explorer (AFPE): Alien Pest Range Maps, Early Detection & Distribution Mapping System (EDDMapS) - Dogwood Anthracnose, Gallery of Pests - Dogwood Anthracnose Disease, Invasive Plant Atlas of the United States - Dogwood Anthracnose, Plantwise Technical Factsheet - Anthracnose of Dogwood (, Dogwood Anthracnose and its Spread in the South (PDF | 483 KB), How to Identify and Control Dogwood Anthracnose, Forest Invasive Alien Species - Dogwood Anthracnose, Dogwood Anthracnose - Integrated Pest Management Solutions for the Landscaping Professional (PDF | 100 KB), Fact Sheet: Dogwood Anthracnose (PDF | 245 KB), Ground Covers, Trees, Shrubs, and Woody Ornamentals Fact Sheets, Dogwood Anthracnose - Plant Pathology Fact Sheet (Nov 2005) (PDF | 205 KB), Diagnostic Facts: Dogwood Anthracnose (Mar 2002) (PDF | 746 KB), Anthracnose Diseases of Dogwood (PDF | 313 KB), Anthracnose of Flowering Dogwood (PDF | 424 KB), Discula "Dogwood" Anthracnose - Pest Fact Sheet 39, Fact Sheets - Diseases: Dogwood Anthracnose, Pacific Northwest Plant Disease Management Handbook - Dogwood (, Patterns of evolution in Discula fungi and the origin of dogwood anthracnose in North America, studied using arbitrarily amplified and ribosomal DNA, Dogwood anthracnose: understanding a disease new to North America. Researchers also speculate that climatic changes and droughts may have predisposed trees to infection, thus causing coincidental outbreaks in the Northeast and the Pacific Northwest (Anderson et al. Dogwood anthracnose: A new disease threatens two native Cornus species. Ammirati. This species is known as Cornus racemose. Dogwood Tree Types. 1996). Select the non-indigenous forest pest to view maps depicting state and county distribution. Trigiano, and M.T. Cornell University. Dutch Elm Disease. This varied group of plants give great garden value. dikti / Getty Images Latin Name: Various species of Lantana can be invasive. 72:199-203. Provides state, county, point and GIS data. Hibben, C.R., and M.L. 1993. University of Kentucky. ... Bill was responsible for our invasive species strategy and deployment while I was at The Nature Conservancy. 1994, SAMAB 1996). Buddleia davidii is not the only shrub that has turned out to be invasive. Daughtrey, M.L., and C.R. The https:// means all transmitted data is encrypted — in other words, any information or browsing history that you provide is transmitted securely. 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. Current Genetics 39(5-6):346-354. By 1995, the disease had been confirmed in northern Georgia (1987), western North Carolina (1988), and as far south as northern Alabama. Images of dogwood anthracnose infections. It grows to about 20 feet high with an 18-foot spread. 1996), Fungal disease of flowering dogwood (Cornus florida) and Pacific dogwood (Cornus nuttallii) trees (Daughtrey et al. 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. Parham, J.M. ... 12 Species of Dogwood Trees and Shrubs 7 Species of Daisies for Your Flower Garden 18 Species of Holly Plants During that period, the number of plots with severe epidemics (more than 25 percent of foliage blighted) increased by 638 percent. 32:61-73. 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. 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. Phytophthora alni. Anthracnose causes serious damage to two species of dogwood in natural habitats: eastern flowering dogwood (C. florida) and Pacific dogwood (C. nuttallii). (ed.). Environmental factors influence dogwood’s susceptibility to the disease. – roughleaf dogwood Subordinate Taxa. Landscape, Nursery, and Urban Forestry Program. Invasive plants, animals and pests are taking a toll on Wisconsin's lakes, rivers and landscapes. Brown. Figures 5-6. 1995). Michigan State University. Plant Disease. 83:633-642. 1995. Parasitic fungus affects region’s dogwood. 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. This species is invasive, but is considered a wetland plant, so it is not counted as invasive in our survey. Invasive Listing Sources: Website developed by The University of Georgia - Center for Invasive Species and Ecosystem Health and the National Park Service in cooperation with the Invasive Plant Atlas of New England , Invasive Plant Control, Inc. , USDA Forest Service , Anderson, R.L., J.L. Anthracnose infection of dogwood seedlings exposed to natural inoculum in western North Carolina. 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