... develop brown mottling concentrated atthe nodes, especially near the bse. By Winter the entire culm is speckled with fine black spots ... brownish black.In China,the diameter from 15-50mm,bamboo poles use for decoration,This exotic species is very popular for ... 15-20mm,20-25mm,25-30mm,30-35mm,35-45mm poles for sales,for fence,usually we sale diameter 18-22mm ...