I had a bamboo in a pot that was looking a bit sorry for itself and I chucked the pot and planted it straight into the bed- a month on and it is thriving and growing like I have fingers dusted with bonemeal 
Just about everyone thinks I am mad but they are family and old people, they are wrong aren't they? [hopeful] 
I don't have grass my garden is all paved over bar two beds that are so dull I needed some green.
This bamboo surely won't take over my whole garden will it?