Plants available from nurseries come from cuttings, which mean the plants share the same genetic codes. For example, all of the petunias are the same colors, develop the same, have similar flowers that last for a set number of days. Native flowers share similar, but not identical, DNA. Native flowers of the same species may produce flowers of differing colors and shades. Some may produce tall stems, while others may grow close to the ground. There may be variations of the leaf colors. For this reason, native plants give lawns and gardens an air of something unexpected.
It's not unusual for native plants to have a definite growing cycle. At the end of that period of growth, some plants die. In the wild, animals, such as deer, would feed on the dead plant matter to remove it. In your yard, you can opt to leave the plants as they reach the end of their life cycle and let them recycle naturally into the ground as compost. You can also opt to remove them as their growing period ends and replace them with another plant. Perennial native plants often have interesting seeds pods or bark that provide interesting textures to view during the plant's dormant months.
A lawn and garden planted with native grasses and flowers requires less maintenance because you don't have to mow the grass or water the flowers except when you are getting the naturescape started. Dead plants provide fertilizer, so you don't have to spend money fertilizing the ground, nor do you add chemicals to the earth to keep the plants healthy. Native grasses attract song birds and other wildlife, allowing you to enjoy their natural beauty.
When you consider adding native plants to your landscape, keep in mind how much rainfall your area receives annually. Choose plants that are suitable for where you plan to set them. For example, set plants that like full sun in sunny spots and place the ones that like the shade in areas that at least have partial shade. Take into consideration the colors of the native flowers you want to plant to create a pleasing color palate. Consult the National Plant Database to help you make your selection.