![]() Especially obvious in wet summers, Norway maple is susceptible to infection by a fungus called tar spot Rhytisma acerinum which is ugly but not usually damaging to the tree. Wind conditions were approximated by taking an average. In this experiment, the repeated trials were conducted on different days to account for potential variability in wind conditions. It is not always fatal, but causes aesthetic problems. Each natural Norway maple seed was dropped 2 times and each 3D-printed Norway maple seed and 3D-printed silver maple seed was dropped 3 times from the platform. The wilting may be localized on one or two branches, but it may affect the entire canopy. ![]() Pests and diseases: Norway maples are susceptible to Verticillum wilt, which can cause sudden wilting of the leaves. Further, because it has shallow roots and casts a dense shade, other plants, including grass will not grow beneath it, leaving bare ground. Landscape value and potential for home plantingBecause it threatens native species and ecosystems, it is widely recommended that Norway Maple not be planted. Today it is not only the most common planted tree in Toronto parks, yards and streets, but it has also independently invaded Toronto's remaining natural ecosystems. Due to its tolerance of urban pollution, salt and other stresses it was planted by choice to replace elms destreoyed by Dutch Elm Disease in the mid 20th century. Norway maple is the dominant tree of urban forests in many North American cities, including Toronto. Norway maple's place in Toronto's urban forest Return to top of page Norway maple IN TORONTO Sugar maple bark has vertical ridges that curl on one side while Norway maple bark has shallow, intersecting ridges in a regular, often diamond-shaped pattern. Especially in winter, the two species can be distinguished by the bark. Sugar maple leaves never have 7 lobes the sap is clear, visible when the leaf stalk is broken the dangling flowers have no petals and the pairs of samara wings (keys) are nearly paralell. Norway maple is regularly confused with the native sugar maple ( Acer saccharum). There are many cultivars of Norway maple, including the popular Crimson King, which has maroon-coloured leaves. ![]() See London plane-tree page for comparison of leaf shape. The species name platanoides means resembling a plane tree ( Platanus spp), from Platanus, the classical name for plane tree and oides, meaning resembling. The genus name Acer means sharp, referring to the sharp tips of the leaf lobes of most maples. Now Norway maple has been designated an invasive species because it has encroached on natural forests where its dense shade prevents young sugar maples from growing. Tolerant of pollution and drought, by the mid 20th century it was the most frequently planted in towns and cities. By the 1800s, Norway maple was a popular ornamental tree in North America. It does not store any personal data.Native to Europe, Norway maple was introduced to North America around 1756 by the botanist and nurseryman John Bartram, who was central to the exchange of plant specie between Europe and North America. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The cookie is used to store the user consent for the cookies in the category "Performance". This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other. The cookies is used to store the user consent for the cookies in the category "Necessary". The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The cookie is used to store the user consent for the cookies in the category "Analytics". These cookies ensure basic functionalities and security features of the website, anonymously. Last year I discovered what every squirrel. Necessary cookies are absolutely essential for the website to function properly. The invasive Norway maple produces saramas with seeds oriented in a single horizontal line, like wings in flight.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |