I planted some Phyllostachys nigra last year. It came throught the winter ok but it was very late to send up new shoots. It is just now starting to show some vigour.
This has me a little worried because I spoke with a lady a few weeks ago who had planted some two years ago. After seeing 20 foot rhizomes creeping around her garden this summer, she decided to dig up the bamboo and discard it.
I went on-line and found some great tips on how to manage an unruly bamboo. The advice I liked best calls for a string to be layed out beyond which you don't want the bamboo to spread. Then simply work the line with a good spade, pushing it as deep into the soil as you can. They recommend doing this in the fall. This, the writer claims, will sever any culms that have crept beyond from their food source, and these will consequently die.
I would love to hear from people who have this stuff in the garden in zone 6. Any tips for control would be appreciated.