Norway Maple Tree

Norway maple is a large, dense-canopied deciduous tree with dark green, five-lobed leaves, early spring flowers, and yellow autumn foliage. It is widely planted as a shade and street tree, but it can escape cultivation and displace native vegetation in some regions. ## Landscape use and seasonal interest Allow ample room for its canopy and roots. [University of Maryland Extension](https://extension.umd.edu/resource/norway-maple) gives typical mature dimensions of 40–50 ft tall and 30–50 ft wide, with some trees growing taller. Yellow-green flower clusters open before the leaves; paired winged seeds follow, and foliage turns yellow in fall. [Oregon State University](https://landscapeplants.oregonstate.edu/plants/acer-platanoides) notes that shallow roots can compete with lawn and affect nearby paving. ## Siting and regional considerations The species tolerates a range of soils, including clay, and grows in full sun or partial shade. Choose a site with room for mature roots and crown. Consider local invasive-plant guidance before planting: [UConn Extension](https://extension.uconn.edu/publication/norway-maple/) reports naturalization and ecological impacts in parts of North America. That regional concern is a siting consideration; it does not establish that this species is no longer sold. ## Maintenance Water while establishing and during prolonged dry periods. Keep turf and paving clear of major surface roots where practical. Remove damaged branches as needed and collect seedlings where they are unwanted.