The best flowering plants for window boxes
Growing flowers in a window box is a great way to brighten up the front of your home.
There are many different plants that you can grow in a window box including annuals, bulbs, succulents and ornamental grasses.
In this article I’ve listed ten of my favorite window box flowers to add color and interest to your home.
Most of these flowers are annuals, so you can change them up every year.
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1. Petunia (Petunia × atkinsiana)
Trailing petunias are one of the most popular plants for window boxes.
They grow best in a position that receives at least six hours of sunlight a day and they can tolerate hot temperatures and humidity.
Petunias come in a wide range of colors including purple, pink, red, yellow and white.
You can use one single color or combination of colors in a window box.
Plant petunia seeds in early spring and you’ll have blooms all through summer.
Geraniums are beautifully fragrant plants that look great in window boxes.
They grow best in a sunny spot, but they need some afternoon shade in hot summer weather.
When watering geraniums, it’s best to water the base of the plant to reduce the likelihood of fungal diseases.
Geraniums aren’t frost tolerant so they will need to be moved indoors before the first frost of the season.
Trailing Fuschias are another great flowering plant for window boxes.
They’re tender perennials that can also be grown as annuals in areas with cold, frosty winters.
Fushias grow best in partial shade and prefer cooler temperatures.
Regular feeding and deadheading will encourage flowering and prolong the flowering period.
Pansies are winter hardy annuals, so they’re perfect window box flowers for areas that receive frosts.
They come in a variety of bright colors and their edible flowers can be used in salads or as a decoration.
Pansies grow best in cool temperatures in a full or partial sun position.
They bloom from fall to winter in hot climates and from spring to summer in cool climates.
5. Marigold (Tagetes)
Marigolds have beautiful bright yellow and orange flowers.
They grow best in a position with full sun and bloom during spring and summer.
Marigolds are easy to grow from seeds and can be planted directly in the window box after the danger of frost has passed, or started indoors four to six weeks before you’re ready to plant them outdoors.
6. Nasturtiums (Tropaeolum majus)
Trailing Nasturtiums can grow more than 3 feet (90 cm) long and look beautiful cascading down the sides of a window box.
Nasturtium flowers can be orange, red, yellow or cream and the flowers are edible.
Nasturtium seeds can be planted directly in the window box after the last frost of the season when the soil is warm.
In colder areas, you can plant the seeds indoors and transplant them out in spring.
Dianthuses, also called pinks, are an easy to grow annual with pink, white and red flowers.
They’re great for window boxes in a position with full sun.
Dianthus can withstand light frosts and cold weather but not prolonged freezing temperatures.
Impatiens, also called Busy Lizzie, has beautiful bright flowers in colors of pink, red, purple and white.
They grow well in a position with partial shade and need regular watering during the growing season.
Impatiens can be fertilized every two weeks during spring and summer to promote more blooms.
9. Portulaca (Portulaca grandiflora)
Portulaca is an ideal window box flower for full sun positions.
Portulaca has flowers in variety of colors including pink, yellow, red, orange, cream and white.
The fleshy foliage stores moisture well so it’s a good drought tolerant plant.
Portulaca reseeds readily and usually grows back every year.
10. Annual Begonia (Begonia semperflorens)
Annual Begonias, also called Wax Begonias, have beautiful pink, red and white flowers.
Some varieties have green leaves and others have reddish colored leaves.
Annual begonias grow well in a full sun position but they need afternoon shade in areas with hot summer temperatures.
Annual begonias should be watered at the base to avoid fungal diseases.
So there’s my list of 10 best flowers for window boxes.
These flowers are sure to draw attention to your home with their beautiful bright blooms.