Fargesia papyrifera blue dragon, commonly known as the blue bamboo, is an evergreen perennial that produces blue bamboo in the spring and autumn. Ultimate height 4m and spread 2m, hardy to -15 C, Preferring full to half sun and is clump forming, Ideal for beds, borders and containers. Supplied as a 12cm potted plant. Please note does not become blue until mature, around 5-10 years