Newly planted bamboo

Hi everyone, I've followed the advice of the good folks on here to have finally plant my bamboo plants (yes I know I've left it late!).

Anyway here's a pic....Is it ok/necessary to do as I've done and wrap a little string the bamboo, just to keep it growing in the directly desired? The canes are very thin, so I thought it may be helpful?...




Thanks

 

Hello, it won't do the plants any harm, and stops the canes from flopping about, doesn't look obtrusive, so why not?