Did it break the pot before get root bound? I'll try to divide before reaching a deformed pot point. And I hope the pot resist the first rhyzome attacks

Hi everyone. My first post. I want to introduce myself first. I´m from the north of Spain and I´m doing my first steps with bamboo in my garden. First I planted 1x Phyllostachys aurea, 1x P. Bisetti and 1x P. Nigra Henonis (the small one in the image and I hope it become the biggest) in the ground. ...