Thank you. I will post them as I complete. I have two of the styrofoam coolers. I have to decorate them once I get them planted so they will look like stone planters and not coolers.
The other two are large polyurethene pots. They are 4' tall and 4' wide. I am just going to put one knockout rose in each of those and a couple perennials and Spring and summer bulbs and hardy sedum.
FYI......I did not think Knockout roses had a sent but in the pots up close I noticed they have a nice rose fragrance. That is going to be a plus on the patio close to the seating areas.
Thank you all for the suggestion it really helped choosing plants.