Habit and Form
'Columnare', 'Erectum', 'Olmsted' - Some confusion exists as to
the exact characteristics of these 3 cultivars. All are upright, columnar
forms 10' to 20' wide and 40' to 60' tall. Generally comprised of a single
central trunk with short lateral branches. These forms of Norway maple are
good choices for street trees.
'Crimson King' - A very popular cultivar that many consider to be overused. Leaves emerge bright crimson and deepen to maroon which persists throughout the growing season. Slower growing than the species. Fall color usually a bizarre brownish-maroon.
'Drummondii' - Possesses light green leaves with with a prominent white edge. Somewhat slow growing, developing an oval to rounded head. Frequently reverts and green sections must be removed or they will overgrow variegated sections because of their greater vigor
'Emerald Queen' - Increasingly popular for its upright, rounded habit ( to 50' tall and 40' wide) and yellow fall color. Commonly planted.
'Globosum' - A truly dwarf form (15' to 18'). Develops a compact, rounded,
dense head. Typically grafted at around 6 feet. An excellent choice for planting
beneath utility lines.
'Schwedleri' - An old cultivar that is a parent of many of the newer red foliage forms. Grows larger and more rapidly than 'Crimson King'. Foliage emerges maroon, but turns black-green as it matures. Color effect is more subtle than 'Crimson King' and is easier to use in landscapes.
'Summershade' - A handsome shade tree with a rounded mature form (to 40' tall and wide) and good foliage substance. Marketed as being fast-growing and resistant to summer heat. Fall color has proved to be inferior to other forms.