You must give us more details of what you are looking for, type of plant, where the pot will be kept etc etc.

You can grow Camelias in large pots Linda and Roses .

Do you want it to bloom?

It also depends where the pot is, cammelia for example can drop their buds in the early morning sun.

Thanks everyone.

How about a fern or a group of ferns. You could have a topiary buxus and maybe underplant with bulbs and annuals. Winter flowering pansies can go in now and begonia sempervirens for the summer months.