Atmosphere and design style in a garden or yard is only limited to the imaginations of their creators. Some styles and decoration are based on a theme, some are based on the style of the home, and others are simply whimsical or imaginative.
Adding lawn decor to a design plan is often limited to a bird bath, statue, or other focal point that most often seems out of place. Having a display like these pots in a lawn area is more creative but still an unusual placement.
Among other considerations, landscaping and garden decoration is kept out of the lawn area and in bedding areas because of the inconvenience of having to mow and trim around it. For most folks, convenience and ease most always wins over style. Keep this in mind when creating your own yard plans.