It is not always possible to spot the infection as sapwood staining (sometimes patches of dark or olive green) may not be obvious. We bought and planted an 11 foot tall 3 inch trunk crimson king maple from a local nursery. 'Columnare', 'Erectum', 'Olmsted' - Some confusion exists as to the exact characteristics of these 3 cultivars. Pests: Susceptible to Verticillium wilt and issues with tar/black spot Responsible use: Norway maple’s adaptive and reliable performance has led to widespread use. It originated as a garden cultivar. Acer platanoides ‘Royal Red’ ‘Royal Red’ Norway Maple. These medium-sized (up to 45 feet), showy trees are popular with home gardeners who want a shade tree that will provide spring, summer and fall color. Maple wilt can show up as both acute and chronic signs of Verticillium infection. Not only is this unsightly, but it can weaken the tree, discolor leaves and leave the plant susceptible to other infections, molds and mildews. Susceptible to verticillium wilt which is usually fatal. Maple trees with verticillium wilt have wilted leaves that appear discolored. Family Sapindaceae . It is a member of the family Sapindaceae. Maple. It can be especially bothersome planted near grass, sidewalks or walkways. Seeds are dispersed by wind and are a problem when trees are planted in close proximity to natural areas (10-100 m). Norway Maple form . Cottony maple scale is caused by scale insects that leave cottony, white masses on the underside of your maple's branches. Seeds are dispersed by wind and are a problem when trees are planted in close proximity to natural areas (10-100 m). If staining can not be found do not assume the problem is not verticillium wilt. Close-up of foliage. It is not always possible to spot the infection as sapwood staining (sometimes patches of dark or olive green) may not be obvious. If the scorch does not disappear, then you may have root rot, which usually kills the tree and necessitates removal in order to prevent the spread of infection. Light: Full sun, Part shade Hardy To Zone: 4a Soil Ph: Can tolerate acid to alkaline soil (pH 5.0 to 8.0) Environmental Other: Known to naturalize or become invasive throughout most of the northern U.S. CU Structural Soil™: Yes Moisture Tolerance: Occasionally saturated or very wet soil; Consistently moist, well-drained soil; Occasional periods of dry soil ... My Crimson King Maple has leaves that have black spots on it. Verticillium Wilt; Cotony Maple Scale; Crimson King Maple Tree er et slående træ med lilla grønne blade, der varer hele sommeren. Grows larger and more rapidly than 'Crimson King'. When the roots of susceptible plants grow close to the microsclerotia, the fungus germinates and infects the roots of the plants through wounds or natural openings. The Crimson King Norway Maple is susceptible to Verticillium Wilt, which can cause leaf blight, but is generally a low-maintenance tree. Infected sapwood will be stained a dark or olive green, but staining can't always be found. No serious insect or disease problems. All Rights Reserved. Generally comprised of a single central trunk with short lateral branches. It can also affect Japanese Maple. If it is stained a dark, olive green, then your maple has verticillium. Is there any way to treat for this? Shallow root system can crack or heave nearby driveways or sidewalks. Leaves emerge bright crimson and deepen to maroon which persists throughout the growing season. Otherwise they are trouble free. Acer platanoides, commonly known as the Norway maple, is a species of maple native to eastern and central Europe and western Asia, from France east to Russia, north to southern Scandinavia and southeast to northern Iran. Infected sapwood will be stained a dark or olive green but staining can’t always be found. It has been dropping these leaves for about two weeks. Its canopy is dense and it has shallow roots which make it very challenging to grown anything under the drip line of the tree. Left unchecked, this fungal infection kills branches and eventually destroys your tree. Verticillium is a soil disease. typically 40' to 60' tall, but can reach 90', opposite, 5-lobed leaves, 4" to 7" across, shade tree for lawns, parks, industrial parks, creates very dense shade which kills out turf, grows too large for residential landscapes, seeds freely, get many weed seedling trees, large, plump green-maroon buds (compare with, cultivars by grafting, some by tissue culture. These microsclerotia may lie dormant in the soil for years. Susceptible to verticillium wilt. Monitor your tree for symptoms and remove additional branches, if necessary. Something that can be planted in the same, or near the same spot and is less susceptible to verticillium wilt. The … The tree was burlap balled. These forms of Norway maple are good choices for street trees. During the acute stage, maple trees will have leaves that curl, dry, appear abnormally red or yellow, and fall. Marketed as being fast-growing and resistant to summer heat. ... Wine colored leaves on a species susceptible to verticillium wilt. It was brought to North America in the mid-1700s as a shade tree. Soil. Zone:4-8 Height:50’ Width:40’. An excellent choice for planting beneath utility lines. Cobleskill, NY. : Japanese beetles, cottony maple scale . The large tree might have verticillium wilt or suffering from lack of water, I cannot tell from your photo. Environmental Characteristics. Citation and Acknowledgements: University of Connecticut Plant Database, http://hort.uconn.edu/plants, Mark H. Brand, Department of Plant Science and Landscape Architecture, Storrs, CT 06269-4067 USA. If it is stained a dark, olive green, then your maple has verticillium. Foliage emerges maroon, but turns black-green as it matures. 'Summershade' - A handsome shade tree with a rounded mature form (to 40' tall and wide) and good foliage substance. This is a much more serious disease that affects all kinds of maples, but Sugar Maple and Silver Maple are the ones most commonly affected. If this is your tree you might want to consider a consultation with a certified tree arborist in your area. Another species, Verticillium albo-atrum, is less common. Prone to frost cracking in northern climates. 'Crimson King' - A very popular cultivar that many consider to be overused. … History and significance: The Crimson King variety of the Norway maple was introduced in the United States in 1947. 'Drummondii' - Possesses light green leaves with with a prominent white edge. The Crimson King maple is a variety of the Norway maple (Acer platanoides). Typically grafted at around 6 feet. The best way to keep your maple healthy and happy for years to come is to be aware of the signs and symptoms of Crimson King maple tree diseases. Verticillium wilt is caused by a soil fungus called Verticillium dahliae. Crimson King (Dark purple foliage) schwedler (purplish green foliage) Columnar varieties Japanese - wide range uses, 15 - 25 feet tall. The digital materials (images and text) available from the UConn Plant Database are protected by copyright. Maple Wilt – Maple Wilt is the most common of the maple tree diseases. Leaves emerge bright crimson and deepen to maroon which persists throughout the growing season. If you cannot get the wilt under control fairly quickly, remove the tree to prevent the spread of the disease. Plan the perfect garden with our interactive tool →, crimson leaves image by robert mobley from. 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