This bamboo has been listed as a form of I. tessellatus, but hamadae is from Japan and tessellatus is from China. Hamadae is said to get up to 15 feet tall with leaves up to two feet long, but so far our plant is only about 5 feet tall. The leaves also seem shorter than tessellatus. This bamboo will be exciting if it lives up to its press as a tall hardy bamboo with large leaves for a tropical look. Let's hope so.