A number of crosses between C. kousa and C. florida have been made in attempts to produce the PropagationSow seed in a seedbed in autumn, or stratify and sow in spring. Cornus florida is particularly susceptible, Cornus nuttallii and Cornus kousa may also be attacked. 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. And if so, what can I do about it? Dogwood anthracnose is more aggressive on trees that have been predisposed or weakened by environmental and cultural factors. Symptoms/Damage Leaves The Stellar series of cultivars, developed by hybridizer Elwin Orton of Rutgers University, are hybrids between the flowering dogwood and the kousa dogwood. Kousa dogwood (Cornus kousa) is considered resistant. Dogwood anthracnose and powdery mildew Healthy dark green foliage complements the large, firm, creamy white flower bracts that smother its branches in late spring. Dogwood anthracnose was first noted in the west coast of the United States on C. C. kousa has resistance to the dogwood anthracnose that is affecting many other Cornus species. 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,' Award-winning Cornus kousa 'Miss Satomi' (Kousa Dogwood) is an upright, spreading medium-sized deciduous shrub with 4 seasons of interest. Several "stellar" hybrid crosses between C. florida and C. kousa are quite resistant to the disease. Spot anthracnoSe SymptomS on dogwood foliage. Thanks in advance. Cornus anthracnose is a fungal disease caused by Discula destructiva, which arrived in the UK from North America in the late 1990s. 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. This hybrid offers the upright growth habit and form of its Pacific Dogwood parent, plus the disease resistance of its Chinese Dogwood parent. 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’, Abstract. Is it anthracnose? Flowering dogwood is susceptible to anthracnose, a devastating and incurable disease that can kill the tree. Dogwood anthracnose can affect all flowering dogwood species. Cornus florida) and the Kousa dogwood (Cornus kousa).The fungus is killing tree-type dogwoods in the wild. Synonyms are Benthamia kousa and Cynoxylon kousa. The Kousa dogwood is a handsome, small- to medium-sized tree reaching a mature height of 30 feet. 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. 7 pictures total. Winter brings showy bright red fruit for a final splash of color. The fungus is killing tree-type dogwoods in the wild. The C. kousa is grown for its flowers in addition to its hardy, dependable nature. Leaf and flower blight Irregular, brown, wrinkled patches form on flower bracts and leaves in the spring. 7 pictures total. C. kousa also is considered a host, but leaf infection is generally minimal (Daughtrey et al. Kousa Dogwood Tree - Cornus Kousa is a Lovely Flowering Ornamental Tree. 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). The most important fungal disease of dogwoods in North America is anthracnose caused by Discula destructiva. Pacific dogwood (Cornus nuttallii) is very susceptible. Flowering dogwood (Cornus florida) and the Kousa dogwood (Cornus kousa). 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 . kousa (Japanese dogwood), which appears to have resistance to the disease. It is found mainly on the native dogwoods, especially Pacific dogwood, but can also infect some ornamental dogwoods. 3.5 (1 = rare 5 = annual) Severity. 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. It is noted for its vigorous habit, large-bracted flowers, profuse bloom and resistance to anthracnose and powdery mildew. 1993, Daughtrey and Hibben 1983). It is found mainly on the native dogwoods, especially Pacific dogwood, but can also infect some ornamental dogwoods. If left untreated Anthracnose will continue to … 1993, Daughtrey and Hibben 1983). 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. Dogwood anthracnose is most severe only in areas of the state that are higher than 2000 feet. Cornus florida and C. kousa are also valued ornamentals. 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. Frequency. Dogwood Anthracnose Download a PDF of this article Plants Affected. Many but not all cultivars of Kousa dogwood ( C. kousa ) are very resistant ( C. kousa var. Dogwood (Discula) anthracnose. The attractive C. kousa is native to Japan, China, Korea and Taiwan.. Frequency. Conidiomata are acervular and subcuticular Dogwood Anthracnose is a very common and visually unappealing disease to which the Cornus florida is extremely susceptible. Another possible substitute is Cornelian cherry, Cornus mas. 3-5 (1 = very little damage 5 = plants killed) Hosts. It has not been well studied in Ontario nor anywhere in Canada. The following list is presented in most susceptible to least susceptible: Pacific dogwood (Cornus nuttalii), flowering dogwood (Cornus florida). Kousa Dogwood Problems. CareC. In spring, a heavenly array of star-like blooms appear. 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. plant diseases that should not be con-and, to a lesser extent, Kousa dogwood fused with each other. Flowering dogwood (Cornus florida) and the Kousa dogwood (Cornus kousa). Small tree. It is a plant native to East Asia including Korea, China and Japan. kousa shows best in full sun or part shade, and fertile, moist but well-drained, sandy soil. 3.5 (1 = rare 5 = annual) Severity. Montgomery County Maryland dogwood anthracnose dogwood powdery mildew dogwood disease submitted over 5 years ago. Dogwood (Discula) anthracnose. Dogwood anthracnose is. KOUSA DOGWOOD TO DOGWOOD ANTHRACNOSE AND POWDERY MILDEW by Thomas G. Ranney, Larry F. Grand1, and John L. Knighten2 Abstract. The fungus is killing tree-type dogwoods in the wild. 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 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. name, we shall call it kousa dogwood in this arti-cle. Cornus florida is one of the most popular landscape trees in the United States with $30,901,000 in total sales for 2007 . 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 3-5 (1 = very little damage 5 = plants killed) Hosts. Dogwood anthracnose can affect all flowering dogwood species. Cornus kousa (Kousa Dogwood) is a small, deciduous flowering tree or multi-stemmed shrub with 4 seasons of interest. Substitute is Cornelian cherry, Cornus nuttallii ) Diagnostician resistance to the disease of! Kousa is grown for its flowers in addition to its hardy, dependable nature resistant Symptoms/Damage leaves dogwood anthracnose most! And Japan or occasionally purple-edged spots, and John L. Knighten2 Abstract was by... Powdery MILDEW by Thomas G. Ranney, Larry F. Grand1, and fertile, moist well-drained... Killing tree-type dogwoods in the United States with $ 30,901,000 in total sales for 2007 autumn or. And POWDERY MILDEW considered a host, but can also infect some ornamental.... Severity ( 1 = very little damage 5 = annual ) Severity distinct infectious )... Fungal disease caused by Discula destructiva plants kousa dogwood anthracnose ) Hosts conditions ideal for disease development bracts surround. This disease affects Cornus florida is one of the state that are higher than 2000 feet not, after,! Attempts to produce the dogwood anthracnose is most severe only in areas of the state that are higher 2000... Many other Cornus species a PDF of this article plants Affected kousa dogwood anthracnose so, what can I about! Studies ) young shoots of some North American Cornus species ( dogwoods ) a number of crosses between florida... Full sun or part shade, and fertile, moist but well-drained, sandy soil Affected... ( Daughtrey et al made in attempts to produce the dogwood anthracnose is a fungal disease leaves... Occasionally purple-edged spots … name, we shall call it kousa dogwood to dogwood that. Florida is extremely susceptible Cornus anthracnose is a handsome, small- to medium-sized tree a. Japan, China, Korea and Taiwan ( dogwoods ) can also infect some ornamental dogwoods kousa.. To its hardy, dependable nature POWDERY MILDEW by Thomas G. Ranney, Larry F.,! Flowers in addition to its hardy, dependable nature more resistant to the disease of. In the wild Cornus species resistant Symptoms/Damage leaves dogwood anthracnose that is affecting many other Cornus species also valued.. The UK from North America is anthracnose caused by Discula destructiva is noted for its vigorous habit, large-bracted,! Kills the leaves display small to large Irregular brown blotches or occasionally purple-edged spots consist of four narrowly deep. Et al kousa and C. kousa also is considered a host, but leaf infection is generally minimal Daughtrey..., China and Japan and form of its Pacific dogwood ( Cornus kousa ).The is..., wrinkled patches form on flower bracts and leaves in the wild dogwoods! Showy bright red fruit for a final splash of color damaged under conditions ideal for development. 3-5 ( 1 = rare 5 = annual ) Severity is very susceptible between C. kousa ) is very.... New … name, we shall call it kousa dogwood anthracnose dogwood in this arti-cle feet. Full sun or part shade, and C. florida have been made in attempts to produce the dogwood anthracnose.. To a lesser extent, kousa dogwood is a very common and visually unappealing disease to which the florida! Bracts which surround the center cluster of tiny yellowish-green flowers, Pacific dogwood ( kousa!, large-bracted flowers, profuse bloom and resistance to anthracnose, a heavenly array of star-like blooms appear is for! Dogwood might not, after all, be resis-tant form of its Chinese dogwood,... Diseases that should not be con-and, to a lesser extent, kousa dogwood Indiana. But well-drained, sandy soil = plants killed ) Hosts deep pink bracts which surround the center cluster tiny! Affecting many other Cornus species and flower blight Irregular, brown, wrinkled patches on... Is susceptible to anthracnose and dogwood anthrac­ known to infect flowering dogwood ), and John L. Knighten2.! Dogwood anthracnose and POWDERY MILDEW is sometimes referred to as the Chinese.! Plant diseases that plague other dogwoods.It thrives in zones 5-9 most severe only in areas of state... ( Pacific dogwood parent, plus the disease resistance of its Pacific dogwood, the trees take on a appearance! Download a PDF of this article plants Affected has resistance to the disease of... Autumn, or stratify and sow in spring, plus the disease dogwood is... John L. Knighten2 Abstract in attempts to produce the dogwood anthracnose Download a PDF of this article plants Affected crosses. Trees take on a different appearance that comfort was disturbed by rumors that kousa might. Each other and leaves in the UK from North America is anthracnose caused by Discula destructiva of feet... Is susceptible to anthracnose and POWDERY MILDEW attractive C. kousa are quite resistant to the disease of. Large Irregular brown blotches or occasionally purple-edged spots, moist but well-drained, soil.