Window boxes allow you to create a garden in a small space right outside your window. The boxes come in a wide variety of shapes and sizes to match your home decor. They can also add curb appeal to the front of your home. Many types of flowers do well in window boxes. The key is to plant like flowers together that require the same care and that will complement one another.
Petunias (P. hybrida) are annual, ornamental, flowering plants. They are native to South America and are closely related to the tobacco and pepper plants. Petunias bloom from early spring to late summer and range in color from pink, purple, white, blue and magenta. The flowers can grow up to 4 inches in diameter. The plants spread quickly and prefer well-drained soils and partial sun. They add a lot of color to a window box.
The crocus (Crocus longiflorus) is a perennial, flowering plant that is related to the iris. It has a cup-shaped flower that blooms from late winter to early spring. It ranges in color from yellow, purple, white and lavender. When added with late blooming plants, they can keep your window box alive with color from early spring to winter. The plants only grow to 3 or 4 inches tall so they would be well suited to the front of a window box. They prefer full sun and moist soils.
The hyacinth (Hyacinthus orientalis) is a perennial flowering bulb. It has long, slender leaves that grow 6 to 8 inches long. The flowers grow on long stalks up to a foot long and bloom in early spring. The flowers are fragrant and bell-shaped and range in color from red, blue, white, orange, violet, pink and white. The hyacinth prefers full sun and moist soils.
The geranium (Geranium manculatum) is a perennial flower that is also known as the cranesbill. The flowers can grow up to 2 feet tall and range in color from purple, blue and pink. They bloom from early spring to late summer. Their tall size makes them an excellent flower for the back of a window box. The plants do not tolerate frosts so they must be moved inside in the winter to prevent damage. They prefer full sun and well-drained soils.