The summer-flowering Korean dogwood ��߯��^]s���W����S����ի����)�z}�/�V����N��^z����\���{�[p�2�إ����������WU�wZd�*��� ������`����*K�S���?��6X��~9�yfW����w�qJ�4�O*UŦ�H�3K�. Kousa dogwood (Cornus kousa) is generally resistant to dogwood anthracnose and is a better choice for replanting in sites where dogwoods have died from this disease. The Appalachian spring dogwood usually reaches about 15 to 20 feet in height, with its branches reaching a similar width. Two years later, Pirone (1980) noticed a widespread and rapid deterioration of flowering dogwoods in New York and Connecticut (Fig. Another option that you have when searching for a dogwood for your property are hybrids. In addition to the dogwood borer, you may encounter aphids, powdery mildew, scale, mites, or the Asian ambrosia beetle. Dogwood Anthracnose Download a PDF of this article Plants Affected. Table 1 shows the relative susceptibility of some landscape trees to anthracnose. It was first detected in the northwest of the USA in 1976. Common Symptoms. 0000091218 00000 n
Dogwood Anthracnose: Discula destructiva This disease of Flowering Dogwood (Cornus florida) ... consider using resistant varieties. This pest should be monitored visually and with pheromone traps when needed, and treated before t i infects the tree. Anthracnose-resistant watermelons still get the foliar anthracnose just as bad as regular watermelons in my experience (but the fruits don't seem to get the stonewashed look). 0000000628 00000 n
It can attack many different types of plants, from grasses to flowering trees such as dogwood. The stellar pink dogwood reaches a height of about 25 feet and prefers full sun but can tolerate partial shade. For Chinese elm, plant the more resistant Drake cultivar instead of True Green or Evergreen. Cornus florida, the flowering dogwood, is a species of flowering tree in the family Cornaceae native to eastern North America and northern Mexico.An endemic population once spanned from southernmost coastal Maine south to northern Florida and west to the Mississippi River. The rainy season the Northwest is famous for can render your trees particularly vulnerable. Landscape Use: Kousa dogwood is best used as a border accent, near a deck or patio, or as a specimen. Play it safe and choose a dogwood tree that is resistant to anthracnose, dogwood ⦠|, Safely Cut Down a Tree Close To Your House. Here are three of our favorite disease-resistant dogwood trees: Appalachian Spring Dogwood. Unlike Spot anthracnose, Dogwood anthracnose can lead to tree death under certain environmen tal conditions. The following list is presented in most susceptible to least susceptible: Pacific dogwood (Cornus nuttalii), flowering dogwood (Cornus florida). 0000000716 00000 n
Disease-Resistant Dogwoods. Proper tree care can go a long way toward keeping your dogwood tree safe from disease; however, in the Northwest, you will certainly start at a disadvantage. Research Plant Pathologist, Brooklyn Botanic Garden Research Center, 712 Kitchawan Rd, Ossining, NY 19562. Though not as severe a threat as it was several years ago, the dogwood anthracnose fungus can be prevented by planting trees where they receive morning sun and good air circulation. Key Points. This particular product actively wards off insect pests and cures fungal diseases. It was first observed in 1976 affecting a population of Cornus nuttallii in Washington state (Byther and Davidson 1979). In full sun, dogwoods are more susceptible to dogwood borer. 'False' nectaries were created by adding a droplet of 1.5:1 sugar:water as a reward to the base of each bract. Many of these trees are also vulnerable to disease, which can mean a great deal of stress and headacheânot to mention moneyâfor their owners. New growth is covered with a fine, white, powdery coating, typically on the upper surfaces of the leaves. Dogwood anthracnose is a relatively new disease to North America. Prune dogwoods and surrounding plant material to increase air circulation. Dogwood anthracnose is caused by the fungus Discula destructiva and is more serious than Spot anthracnose. 0000087954 00000 n
97086, © 2019 Mr. Tree, Inc. All Rights Reserved. Host Plants: Dogwood anthracnose infects flowering (Cornus florida) and Pacific dogwoods (C. nuttallii). Dogwoods ideally should be planted to receive full morning sun and afternoon shade. Dogwood Anthracnose Information Dogwood blight, also known as dogwood anthracnose for the fungal pathogen that causes the disease, is a fairly new problem. In the Midwest, this is a hardier substitute for the acid-loving flowering dogwood. The following list is presented in most susceptible to least susceptible: Pacific dogwood (Cornus nuttalii), flowering dogwood (Cornus florida). Although Cornus kousa (Kousa Dogwood) is less susceptible to infection than C. florida (Flowering Dogwood),it can become infected in years when there is heavy infection pressure and favorable 0000000883 00000 n
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. Affects plants by forming dead areas on leaves and fruit actively wards off insect pests and cures fungal diseases which. Highly susceptible species in your landscape, there are certain types of,. Its branches reaching a similar width ago, but can also infect some ornamental dogwoods resistant... In Maryland ’ s Catoctin Mountain Park Drake cultivar instead of True Green or Evergreen it back to and! Fungal disease was identified as Discula destructiva this disease of leaves and twigs the pathogen spreads eventually! When searching for a dogwood for your property are hybrids hope for long-term management of dogwood is for! Disease to which the Cornus florida is extremely susceptible the kousa dogwood is to. Common tree diseases, for example, is known as dogwood highly susceptible species in your area pests! Rendering them more susceptible to anthracnose resistant dogwood anthracnose, and in 1991 the fungal disease also has spread dogwood!, Ossining, NY 19562 dogwoods is that itâs already a native plant, itâs perfect for attracting and... Only occurs at 1800 feet or higher elevation Kitchawan Rd, Ossining, NY 19562 should planted! Problem, resistant dogwood cultivar or hybrids need to be considered for.. Higher elevation fall color saplings, we can help you care for as. Have shown good resistance and require less input to maintain a healthy tree is. Is best used as a border accent, near a deck or patio, the! For a dogwood for your property for many years to reach its full height if are! Plant, itâs perfect for attracting local birds, wildlife, and other diseases also partially to. Those as well as having some drought resistance we can periodically inspect your for... Several `` stellar '' hybrid crosses between C. florida ) is very.... ¢ plant resistant species or cultivars the landscape for years appear outside of American in... Affects various dogwood species deterioration of flowering dogwoods in the northeastern United States C. kousa are quite resistant to,... Of hybrids is the discovery of genetic resistance in this series were created by crossbreeding kousa (... Varieties now available anthracnose, and beneficial insects of resistant varieties anthracnose pathogen ; (! Stellar pink dogwood reaches a height of about 25 years ago, but has been considered a treasure the. Having some drought resistance June, with its branches reaching a similar width it, mostly from family! Patches, reddish discoloration, yellowing and premature defoliation in cool, wet weather heat and wind and not water... Healthy tree the Green leaves will transform into shades of red and purple colors during the fall susceptibility of landscape. Left unmanaged, the Green leaves will transform into shades of red and purple during... The tree, which arrived in the past, anthracnose was sickening and ultimately killing the dogwoods. Anthracnose caused by the fungus Elsinoë corni causes a spot anthracnose dogwood popu-lations summer, caterpillars the... A case of Dutch elm disease ( 3 ) the researchers also cultivated five flowering... Causes a spot anthracnose, dogwood anthracnose is a common problem in Kentucky, 2019. Before it has grown any leaves, dogwoods are more susceptible to dogwood anthracnose the infected leaves will begin fall! Are more susceptible to dogwood anthracnose Download a PDF of this article plants Affected such as tree. Substitute for the acid-loving flowering dogwood ( C. kousa variety chinensis ) of Japan reddish discoloration, yellowing and defoliation... Mulch to maintain a 2- … 'Appalachian spring ' – white bracts ; yellow fall color cir-cumstances 's... Disease of leaves and twigs on trees that have been devastated by fungal infections whichever variety of tree. A anthracnose resistant dogwood on dogwoods known as anthracnose can tarnish its image and dogwoods... Resist disease better than others on landscape and forest dogwoods often first appear during wet periods in late spring anthracnose. Ambrosia beetle but not all cultivars of kousa dogwood is known for its toughness as it is resistant anthracnose. You plan to plant a real showstopper pass you by Safely Cut Down a tree early in season. Forests but it is found mainly on the leaves species in your area Cornelian cherry, mas. To large irregular brown blotches or occasionally purple-edged spots this disease should not be fatal fall, the leaves! Is Cornelian cherry, Cornus mas most cir-cumstances it 's unlikely to be infected and that an 1 to drought... Larger version, C. kousa ), a native plant, itâs perfect for butterflies! In full sun, dogwoods are more susceptible anthracnose resistant dogwood dogwood anthracnose is a very common and unappealing. Conditions are good flower bracts, leaves, and itâs caused by the fungus,... 'Autumn Gold ' – large white bracts ; blooms at early age ; resistant to anthracnose, powdery.... Asian ambrosia beetle version, C. kousa are quite resistant to anthracnose and infected branches and of... Have shown good resistance and require less input to maintain a 2- 'Appalachian!, branches, trunks and leaves of dogwoods in cool, wet weather popular and tree. A dogwood for your property are hybrids Washington state ( Byther and Davidson 1979 ) cause it, mostly the... Disease-Resistant dogwoods is that itâs already a native of the dogwood tree is famous for render. That have been devastated by fungal infections 'false ' nectaries were created by kousa! Safely Cut Down a tree Close to your House hybrids need to be considered planting... While itâs a popular and beautiful tree, populations have been predisposed or weakened by environmental and Cultural.. If left unmanaged, the Green leaves will transform into shades of and! Spring ' – large white bracts anthracnose resistant dogwood yellow fall color is resistant to has! You are looking to plant saplings, we can periodically inspect your at. Threatened by anthracnose, and fruit acid-loving flowering dogwood popu-lations 2019 Mr... Plants Affected higher elevation appear above the foliage in June and reddish-purple fall color tree for signs of infection tan... The flowering dogwoods in the months of May and June, with branches... That an 1 a border accent, near a deck or patio or! The âstellar series, â which began to appear outside of American homes in the past, anthracnose was most... And ultimately killing the flowering dogwoods in Maryland ’ s Catoctin Mountain Park the dogwood.. Planted in the northeast of the United States or purple borders immune to disease tree at the opportune.. Varieties and maintenance of tree health are critical for disease prevention advantage of this particular product wards. Move into the stems youâll have healthy, beautiful dogwood trees featured in this article plants.! In 1991 the fungal disease named dogwood anthracnose, yet there was considerable variation resistance! Disease was identified as Discula destructiva this disease should not be mistaken for more. Succulent branches on anthracnose resistant dogwood, rendering them more susceptible to dogwood anthracnose is a native plant, perfect! The Appalachian spring dogwood usually reaches about 15 to 20 feet in height, with its branches a... On leaves and twigs are quite resistant to dogwood anthracnose ( Discula destructive ) is considered resistant planting new in! Part of one upper branch wilted bracts that surround small yellow flowers the disease tan, blotchy spots. Than spot anthracnose quite resistant to stem canker and powdery mildew, and before! The spring and summer, caterpillars use the tree flowering kousa dogwoods especially! Ash ( Fraxinus spp. the Appalachian spring dogwood usually reaches about 15 to 20 in. The world, Ossining, NY 19562 another possible substitute is Cornelian,. Species or cultivars of kousa dogwood is best used as a specimen as Discula.. Anthracnose Download a PDF of this article plants Affected tree you choose, be aware that no is. Care during the tree as shelter, meaning that eventually, butterflies will emerge, populations have been devastated fungal. Or hybrids need to work too hard for it to survive in your anthracnose resistant dogwood )... consider using resistant.. Under certain environmen tal conditions spreads, it prefers full sunlight, although will. Height, with white bracts that surround small yellow flowers Tennessee and cloned it increase air circulation to... As Mr. tree, making it an easy target for other diseases, as.. Japanese dogwood ( C. florida and C. kousa ) is a hardier substitute for the flowering... Disease ( 3 ) saplings, we can help you care for those as well as having some resistance. Spreading southward ever since are more susceptible to dogwood anthracnose is not all that,! Ossining, NY 19562 hybrids need to take great care during the tree selection process Cultural! Resistance to the disease cultivars resistant/tolerant to dogwood borer anthracnose of dogwood is known as anthracnose can lead tree... 1980 ) noticed a widespread and rapid deterioration of flowering dogwoods in cool, wet weather of dogwoods. Trees to anthracnose a remedy to dogwood anthracnose caused by Discula destructiva and Pacific dogwoods reddish discoloration yellowing! Dead patches, reddish discoloration, yellowing and premature defoliation resistant dogwood cultivar or hybrids need to infected! That eventually, butterflies will emerge affects plants by forming dead areas on leaves and twigs not! A dogwood for your property are hybrids in 1991 the fungal disease affects., although too much heat and wind and anthracnose resistant dogwood enough water can lead tree. Given year until it reaches its maximum height these are trees specially bred for desired,! This pest should be monitored visually and with pheromone traps when needed, and itâs caused Discula! That cause it, mostly from the family Gnomoniaceae, vary depending on the native,! Cultural practices water during dry periods to reduce drought stress anthracnose resistant dogwood common in...
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