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?
<<waits for clever gardener types that I can trust will not wind me up like family have the last week or so>>
I think bamboo is very invasive and can grow underneath conservatories and push up the flooring. Your neighbours might be cursing you in a fw months time when their garden is overgrown with the stuff. I would be tempted to dig it up now.
I would consider digging it up - my parents have just cleared about half an acre of bamboo out of their garden and it was hard work. Could you dig it up, put it in a pot, and replant the pot to contain the roots? I know people who have done that.