Bob Hobden wrote:

The so called clump forming bamboos are only clump forming to a
degree, in a good growing year they will run and how.
Plant in pots or surrounded by a good strong


35 m of runner in one season in an area 5m*4m from 1 golden & 1 black bamboo

The so called clump forming P.aurea is a notorious runner in the southern
states of the US
ie it likes it hot!

pk