|Acer japonicum is a tree in its native habitat and a large tree-like shrub in cultivation. This bushy, deciduous tree with rounded mid-green leaves turn red in the autumn. Small, red-purple flowers appear in April in long drooping corymbs. Leaves tend to scorch in hot, dry weather.
The cultivar, 'Kinugasayama' is very close to the species, Acer sieboldianum, has hairiness feature similar to that species.