Petunias are a mainstay of gardeners because of their easy care, long blooming period, variety of color and benefits to surrounding plants. Often used in vegetable gardens to ward off damaging pests, petunias are also good border plants in your landscape or as part of a container garden. Combining petunias with other flowering annuals will give you a visually pleasing garden display.
Decide on a color scheme for your flower garden, whether it is in the ground or in containers. Petunias come in a wide variety of colors, from white, pinks and reds to deep, almost black, purples. Your flowers could all have the same hue, like pink, with different values, light pink to dark pink. Or your flower colors could be complementary, like reds and blues with yellow.
Purchase flowering plants that not only fit into your color scheme but that will grow and thrive in the same environment as petunias. Petunias grow best sunny locations with well-draining soil. The flowering plants you choose should also be sun loving.
Plant your petunias in front of other plants or around the edge of containers. Petunias are low-growing plants that will spread horizontally. Behind the petunias plant medium-height flowers with tall blooms in the back (or in the center if it is a container). The closer together your flowers are planted, the more dramatic and pleasing your garden will look.
Cut dead and dying flower heads off your petunias and other flowering plants to encourage continuing flowering throughout the summer.