Acer palmatum Japanese Maple Size: 15 to 25' in height, spread equal to or greater than height. Hardiness: Depending on cultivar, Zones 5 and 6 to 8. Habit: Species tends towards a rounded to broad-rounded character, often the branches assume a layered effect similar to Flowering Dogwood. Can be a single or multiple stem tree. Rate: Slow, 10 to 15' over a 10 year period. Culture: Part sun, part shade.