Planting pansies

I am an easy target with bargain plants. My latest arrival is 72 bedding pansies for 99p.
Obviously they are the size of a small sprig of parsley and should have been potted up months ago. But I am undaunted and have planted them in all my containers around plants that will die back over winter leaving the cheery pansies lots of space. That's the plan anyway and we will see how well it works in due course!