Pots really add nice color to a patio as well as breaks up a boring patio. Many times drip can be added to help irrigate the pots. Ideally they would be on their own zone so the water can controlled better but anything helps. If you are anything like me you forget to water your pots and they go from beautiful to dead real fast.
We like to install perennials and annuals together in the pots to give long lasting year round color.