Genus Acer Species rubrum Cultivar 'Franksred' Red SunsetÂ® Common Name Red SunsetÂ® Red Maple Patent ID Height 45 to 50 Feet Spread 35 to 40 Feet Habit Large, rounded tree. Moderate growth rate. Zone 3 to 9 Culture Full sun to partial shade. Flower Small, reddish-purple, March-April. Flower Color Foliage 3-5 lobed, toothed. Medium green top, gray green underneath. New growth is often red. Deciduous. Category: Shade Tree Description The best red maple for fall color. Extremely cold hardy.