The idea is that the pots and plants should step down proportionally from each other. You may also want to consider contrasting the textures of the plants. For example, mix hard spiky leaves with soft smaller flowers. Another idea would be to pick a plant theme colour and repeating it in all pots.
Additionally, how do you group plants together?
To add colour to a group bring together brightly coloured plants like croton or red aglaonema with mellower foliage like ferns or peperomias. You can also add trailing varieties like the sedum as ground cover. Pair flowering plants like kalanchoes with peperomia, fittonia, and philodendron on a moss stick.
Consequently, how do I arrange my patio pots?
Place your container in groups at the corners or near the edge of your patio. Choose a 4-inch pot for small tables, and a 6-inch pot for the patio table. Suspend hanging baskets on any walls that are adjacent to the patio. Turn empty containers upside-down and set a container of equal size on top to create height.