Container gardening allows anyone to enjoy flowers and their beauty even if you live in an apartment, town home, or have very little usable land for planting.
Select plants that similar water and light requirements. Select plants with various flower and leaf color, bloom time, height and texture.
A general rule of thumb when designing a container is to include a thriller, fillers, and spillers. The thriller is the focal point of the container (and yes you can have more than one thriller), the filler compliments the thriller and helps fill in space in the container, and spillers flow over the edge of the container and add another contrasting design element.