Possibly the best place for it, Guest. If Tropaeolum speciosum likes your garden then it can become an invasive, though pretty, weed. Having it in a container will prevent the bulb like roots from spreading but you will still have to watch out for the seeds.

It loves you or hates you... if it hates you nothing you do will make it grow. If it loves you watch out! Bulba and I eradicated it from our garden having seen the way it had taken over the garden of a friend in Aberdeen!