Looks like phyllostachys bambusoides "Castillonis"
I have a clump about the same size as in the picture.
A great looking bamboo and fairly hardy.
It is a clumping bamboo so it does not run.
Wes North Vancouver Zone 8b/9a
Keats Island BC Zone 8a
Palm Springs CA Zone 9b/10a
I disagree with you Wes, Phyllostachys are running bamboos. It may not run that much where you live because of the climate.
Dean
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