Grows into a round-headed, open, airy tree with slender stems. Green leaves are deeply-lobed and dissected. The leaves turn brilliant shades of yellow, orange, and red in autumn. The perfect medium-sized shade tree. Excellent street tree. Acer palmatum (Japanese Maple) is a deciduous tree that grows at a moderate rate to reach 5m (H) x 4m (W) in 10 years.