This is the standard form of the species. The culms are solid green - the other two of our emeiensis species have striated culms. The nearly perfect upright form and symetrically round footprint, beautiful foliage, and clean straight culms make all of the B.emeiensis forms superior landscape bamboos. ;od cold hardiness for a sub-tropical bamboo. Will grow to 30'-35' tall. Min USDA zone: 9a. Click to find your zone.