Since this bamboo, which I'm guessing is phyllostahys bambusoides, spreads by sending out underground rhizomes, it's possible to control it by cutting back the rhizomes periodically or installing a special barrier. It's even possbile to plant it in a container that has the bottom cut out. The American Bamboo Society website has lots of info about how to control and care for it. It does benefit from mulch, watering and fertilzer, but I'm fairly sure no special care has been taken of this patch. Ideally it should have at least 5 hours of direct sunlight, and be planted in slightly acidic, loamy soil. My neighbor's is mulched by the leaves from neighboring trees, and watered by the rain. Every spring, he thins it by cutting 10-20 poles out. I make sure I'm around on those days and always ask for a few poles.
They've been great garden helpers, serving as pole bean and morning glory teepees, here at home and in the school garden.
They've been used as tomato stakes and deer guards.
And even to build a fort.
After a few years, they get brittle and they're used as kindling for our fireplace, or get composted.
What should I do with this year's bamboo?