Bamboo is very invasive, it sends out underground rhizomes that are hard to deal with and it's a nightmare to get rid of. Some years ago someone gave me some so called dwarf bamboo. I planted it into one of my borders and It spread like wildfire. I sprayed it as often as I could with a systemic weed killer and it took over a year to completely eradicate it. Even then it was hard to get rid of the dead dry stalks that were left. You can't just pull them up out of the ground as I discovered that the roots grow deep and in all directions. I ended up setting fire to them and burnt them down to the soil.