Mint can grow wild - the trick is to really like mojitos. ;)
We have ours in a pot, so it should be pretty easy to contain.
We are travelling too much this summer for me to maintain one properly.
It is always a tradeoff, but I like to be able to do a bit of everything. Though, at the moment, not too much in the garden. Happy travels!
I usually have at least one tomato plant, but I didn't even do that this year. The only thing I planted was garlic and that happened last fall.
Good point about the mojitos!