The Best Flowers to Plant in Window Boxes

Window boxes are a lovely way to have windows with colorful blooms and foliage. Whether the planter boxes are near a porch or patio or just hanging from the windows freestyle, window box gardening is a hot trend. The best flowers for a window box are the ones that are tried-and-true favorites for container conditions.

Garden Geranium

Pelargonium x hortorum, known as the garden geranium, is from the geranium family of plants. It is an easy-growing and fast-growing plant good for containers and indoor use. These can get up to 3 feet tall with leaves 2 to 3 inches wide. Flowers are 4 to 5 inches wide and in many different colors depending on the variety of geranium. Grow a geranium in well-drained soil in bright, sunny locations. Propagate via seed or by cuttings.


Viola x Wittrockiana, known as a pansy, is from the violet family. It is a shade-loving perennial that is good for containers. It will get 4 to 10 inches tall with deep green leaves and small mounds. Flowers are 1 to 4 inches wide and a variety of color choices. They are a popular winter flower. Plant a pansy in any soil in bright sun to partial shade. It prefers a moist soil. Propagate via cuttings and by seeds.


Impatiens wallerana, what is known as an impatiens, is from the jewelweed family. It is a shade-loving plant that is easy to grow and attracts hummingbirds. It is good for containers. They get 8 to 24 inches tall and the same in width. There are varied colors of flowers and leaf types. Plant an impatiens in moist soil in partial shade to partial sun. Propagate via cuttings or by seed.


Crocus spp., also known as a crocus or spring crocus, is from the lily family. It is a fragrant perennial that is easy to grow and good for indoor use and container plants. Flowers are in varied colors and the foliage is grass like. Flowers come before the leaves. Plant a crocus in full sun to partial shade. Propagate via cormlet division or by seed.


Petunia x hybrida, also known as a petunia, is from nightshade family. It is an easy to grow perennial (that is used as an annual) and good for container use. Flower size depends on the category. Grandiflora (large flowered) get 5 inches wide and stems will trail. Multiflora (many flowered) get 2 to 3 inches wide and are bushy. Leaves have a fragrance and are sticky. Plant a petunia in bright sun in good garden soil. Propagate via seed.

Keywords: window boxes, planter boxes, best flowers for a window box

About this Author

Tina Samuels has been a full-time freelance writer for more than 10 years, concentrating on health and gardening topics, and a writer for 20 years. She has written for "Arthritis Today," "Alabama Living," and "Mature Years," as well as online content. She has one book, “A Georgia Native Plant Guide,” offered through Mercer University; others are in development.