I have a very large golden bamboo grown in a large container. It's about 5-6 years old & has always performed very well. I water it copiously & feed it regularly throughout the spring & summer. It's primary purpose is to provide privacy from my neighbours. It cannot be planted out as the screening is required on a patio. The problem is that it is about 15ft high, possibly more & it's now grown to the height of my neighbour's laburnam tree next to it. Everytime we experience strong winds, the pot blows over, despite wedging huge sacks of compost & grit against it. It takes forever to right the pot as the root ball is so heavy. What is the best way to reduce the height & still retain a natural appearance. From the research I've done, if I cut above the corns, I will end up with lollipop bunches of side shoots which I believe is unsightly. I do not wish to prune it to the ground as we will no longer have any privacy. Is any other method available? Can anyone help? I have read that autumn or winter is the best time to perform any pruning. Is that correct?