Fair point. I have given a good few of the tiddlers a trim but I am a bit wary as it has only really put out medium 15mm (3/4")ish culms this year. Lots of them though. It generally looks OK so I don't believe its unhappy.
MAybe it will give out a second flush in early June.
Thanks for the response though. I am struggling find a bamboo source to learn there methods from. I seem to just make it up as I go.
G