Flowering dogwood (Cornus florida) and the Kousa dogwood (Cornus kousa). It is sometimes referred to as the Chinese dogwood. VENUS is a hybrid dogwood (Cornus kousa 'Chinensis' x Cornus nuttalii Goldspot' x Cornus kousa 'Rosea') that was developed by Elwin R. Orton, Jr. as part of the Jersey Star series of dogwoods released by Rutgers University. Frequency (1 = rare 5 = annual) Severity (1 = very little damage 5 = plants killed) Hosts. Kousa Dogwood Problems. DOGWOOD ANTHRACNOSE SCOTT C. REDLIN Systematic Botany and Mycology Laboratory, USDA-ARS, BARC- West, Beltsville, Maryland 20705-2350 ABSTRACT A detailed description is provided of the coelomycetous fungus causing dogwood anthracnose on Cornusflorida, C. kousa and C. nuttallii in North America. kousa (Japanese dogwood), which appears to have resistance to the disease. Flowering dogwood Oriental dogwood Dogwood hybrid Cornus florida Cornus kousa C. florida X C. kousa Cherokee Brave National Stellar Pink Cherokee Chief Milky Way Select Cherokee Sunset Plena Weaver’s White Welch's Bay Beauty Among some of the more common predisposing factors are drought stress, poor site selection (e.g., full sun, windy or open area, or thin, or rocky soil), mechanical injury (e.g., damage from string trimmers Winter brings showy bright red fruit for a final splash of color. Cornus kousa (Kousa Dogwood) is a small, deciduous flowering tree or multi-stemmed shrub with 4 seasons of interest. Dogwood (Discula) anthracnose. 7 pictures total. This disease affects Cornus florida (flowering dogwood), C. nuttallii (Pacific dogwood), and C. kousa (kousa dogwood). KOUSA DOGWOOD TO DOGWOOD ANTHRACNOSE AND POWDERY MILDEW by Thomas G. Ranney, Larry F. Grand1, and John L. Knighten2 Abstract. Dogwood anthracnose is a fungal disease of leaves and twigs. Frequency. kousa shows best in full sun or part shade, and fertile, moist but well-drained, sandy soil. Sherrie Smith anthracnose and dogwood anthrac known to infect flowering dogwood (C. Plant Health Clinic nose. Cornus anthracnose is a fungal disease caused by Discula destructiva, which arrived in the UK from North America in the late 1990s. The Stellar series of cultivars, developed by hybridizer Elwin Orton of Rutgers University, are hybrids between the flowering dogwood and the kousa dogwood. The following list is presented in most susceptible to least susceptible: Pacific dogwood (Cornus nuttalii), flowering dogwood (Cornus florida). It is noted for its vigorous habit, large-bracted flowers, profuse bloom and resistance to anthracnose and powdery mildew. The Kousa dogwood is a handsome, small- to medium-sized tree reaching a mature height of 30 feet. It is found mainly on the native dogwoods, especially Pacific dogwood, but can also infect some ornamental dogwoods. DOGWOOD ANTHRACNOSE Dogwood anthracnose is considered the most serious disease of flowering dogwood (Cornus florida) in Connecticut and the ... crosses between C. florida and C. kousa have yielded promising cultivars such as the 'Stellar' Hybrid series, 'Aurora,' 'Celestial,' 'Constellation,' ‘Ruth Ellen,' In spring, a heavenly array of star-like blooms appear. Dogwood anthracnose was first noted in the west coast of the United States on C. It infects and kills the leaves and young shoots of some North American Cornus species (dogwoods). 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. These are two distinct infectious florida), Pacific dogwood (C. nuttallii) Diagnostician . It is a plant native to East Asia including Korea, China and Japan. Symptoms/Damage Leaves 1993, Daughtrey and Hibben 1983). Dogwood anthracnose is most severe only in areas of the state that are higher than 2000 feet. to be resistant to dogwood anthracnose. Kousa dogwood (Cornus kousa) is considered resistant. Award-winning Cornus kousa 'Miss Satomi' (Kousa Dogwood) is an upright, spreading medium-sized deciduous shrub with 4 seasons of interest. Kousa dogwood (Cornus kousa) ... Dogwood Anthracnose (Discula Anthracnose): This is a relatively new disease of dogwood in South Carolina, and it is caused by the fungus Discula destructiva. However, the cold hardiness of Kousa dogwood in Indiana is questionable. Leaf and flower blight Irregular, brown, wrinkled patches form on flower bracts and leaves in the spring. Synonyms are Benthamia kousa and Cynoxylon kousa. 7 pictures total. The leaves display small to large irregular brown blotches or occasionally purple-edged spots. name, we shall call it kousa dogwood in this arti-cle. The most important fungal disease of dogwoods in North America is anthracnose caused by Discula destructiva. Dogwood Anthracnose is a very common and visually unappealing disease to which the Cornus florida is extremely susceptible. 1996). 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. Dogwood (Discula) anthracnose. Dogwood anthracnose is a fungal disease of leaves and twigs. The fungus is killing tree-type dogwoods in the wild. Kousa dogwoods and their hybrids are generally more resistant than native dogwood to dogwood anthracnose, spot anthracnose, powdery mildew, and common dogwood borers. It has not been well studied in Ontario nor anywhere in Canada. Dogwood anthracnose can affect all flowering dogwood species. Depending on the age of the Kousa dogwood, the trees take on a different appearance. Dogwood anthracnose and powdery mildew Healthy dark green foliage complements the large, firm, creamy white flower bracts that smother its branches in late spring. Small tree. CareC. Resistant Dogwoods: Chinese dogwood, Cornus kousa is tolerant of Discula anthracnose and is recommended for nursery stock and replacement of dogwoods that have been killed by the fungus. Spot anthracnoSe SymptomS on dogwood foliage. This hybrid offers the upright growth habit and form of its Pacific Dogwood parent, plus the disease resistance of its Chinese Dogwood parent. PropagationSow seed in a seedbed in autumn, or stratify and sow in spring. 3-5 (1 = very little damage 5 = plants killed) Hosts. Is it anthracnose? The C. kousa is grown for its flowers in addition to its hardy, dependable nature. Cornus florida and C. kousa are also valued ornamentals. Cornus florida) and the Kousa dogwood (Cornus kousa).The fungus is killing tree-type dogwoods in the wild. Flowering dogwood ( C. florida ) is moderately susceptible but is severely damaged under conditions ideal for disease development. Another possible substitute is Cornelian cherry, Cornus mas. If left untreated Anthracnose will continue to … Dogwood anthracnose can affect all flowering dogwood species. Cornus florida is one of the most popular landscape trees in the United States with $30,901,000 in total sales for 2007 . Cornus florida is particularly susceptible, Cornus nuttallii and Cornus kousa may also be attacked. ProblemsNothing serious. chinensis has been quite susceptible in some studies). Pacific dogwood (Cornus nuttallii) is very susceptible. Recently that comfort was disturbed by rumors that kousa dogwood might not, after all, be resis-tant. It is found mainly on the native dogwoods, especially Pacific dogwood, but can also infect some ornamental dogwoods. And if so, what can I do about it? Kousa dogwood (Cornus kousa) is considered resistant Symptoms/Damage Leaves Kousa dogwood, C. kousa, (also known as Chinese or Japanese dogwood) is resistant but not immune to anthracnose: however it may be a better choice for replanting in sites where flowering dogwoods have died from the disease. Conidiomata are acervular and subcuticular Kousa Dogwood Tree - Cornus Kousa is a Lovely Flowering Ornamental Tree. Several "stellar" hybrid crosses between C. florida and C. kousa are quite resistant to the disease. Sometimes referred to as the Chinese dogwood, this Asian cousin to our native flowering dogwood can be used as a specimen plant or in shrub borders. Dogwood anthracnose caused by Discula destructiva poses a threat to flowering {Cornus florida) and Chinese (C. kousa) dogwood in the eastern United States and to Pacific or western dogwood (C. nutallii) in the Pacific Northwest. The Cornus kousa (Korean Dogwood or just Kousa) tree is more resistant to diseases that plague other dogwoods.It thrives in zones 5-9. 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. A number of crosses between C. kousa and C. florida have been made in attempts to produce the Abstract. Dogwood anthracnose (Discula destructiva) is often described as the most serious disease that affects dogwood species, specifically flowering (Cornus ... C. kousa cultivars ‘Big Apple’, ‘China Girl’, ‘Elizabeth Lustgarten’, ‘Gay Head’, ‘Greensleeves’, C. kousa also is considered a host, but leaf infection is generally minimal (Daughtrey et al. Kousa dogwood trees (Cornus kousa) are superstars in the home garden, with visually lush purple to red fall foliage, showy creamy white flowers and resistance to a … 3.5 (1 = rare 5 = annual) Severity. Dogwood Anthracnose Discula sp. The fungus is killing tree-type dogwoods in the wild. View full size in a new window Kousa dogwood tree Since this species is widely planted at homes and in parks, its reputation for anthracnose resistance has greatly comforted those who worry about the future of flowering dogwood. Dogwood Anthracnose Download a PDF of this article Plants Affected. Flowering dogwood is susceptible to anthracnose, a devastating and incurable disease that can kill the tree. 3-5 (1 = very little damage 5 = plants killed) Hosts. Montgomery County Maryland dogwood anthracnose dogwood powdery mildew dogwood disease submitted over 5 years ago. The attractive C. kousa is native to Japan, China, Korea and Taiwan.. Dogwood Anthracnose Discula sp. Widely cultivated as an ornamental, it is naturalized in New … Dogwood Anthracnose: Discula destructiva This disease of Flowering Dogwood (Cornus florida) ... Kousa Dogwoods, Cornus kousa have shown good resistance and require less input to maintain a healthy tree. 3.5 (1 = rare 5 = annual) Severity. The tree is well established and had a strong bloom this spring, but has developed the leaf curl and spotting shown in the picture attached(if it works). Dogwood anthracnose is more aggressive on trees that have been predisposed or weakened by environmental and cultural factors. Root greenwood cuttings in summer. Cornus kousa is a small deciduous tree 8–12 m (26–39 ft) tall, in the flowering plant family Cornaceae.Common names include kousa, kousa dogwood, Chinese dogwood, Korean dogwood, and Japanese dogwood. C. kousa also is considered a host, but leaf infection is generally minimal (Daughtrey et al. Many but not all cultivars of Kousa dogwood ( C. kousa ) are very resistant ( C. kousa var. Dogwood Anthracnose Discula sp. Flowering dogwood (Cornus florida) and the Kousa dogwood (Cornus kousa). They consist of four narrowly pointed deep pink bracts which surround the center cluster of tiny yellowish-green flowers. plant diseases that should not be con-and, to a lesser extent, Kousa dogwood fused with each other. Frequency. Dogwood anthracnose is. 1993, Daughtrey and Hibben 1983). C. kousa has resistance to the dogwood anthracnose that is affecting many other Cornus species. The following list is presented in most susceptible to least susceptible: Pacific dogwood (Cornus nuttalii), flowering dogwood (Cornus florida). Thanks in advance. Do Twenty taxa of dogwood including cultivars of kousa dogwood (Cornus kousa) and cultivars of hybrids be-tween flowering (Cornus florida) and kousa dogwoods were evaluated for susceptibility to dogwood anthracnose (Discula 1996). Is one of the kousa dogwood to dogwood anthracnose is more aggressive on trees that have been predisposed weakened. Brown blotches or occasionally purple-edged spots on flower bracts and leaves in the spring not! 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