Blue Flowers for Every Garden

Yellows, oranges, and pinks abound in the plant world, but blue flowers sometimes seem harder to find. Here are some to try.

Did you know that blue is the most popular color? In a 2015 poll, more than one-third of people surveyed around the world chose blue as their favorite. It’s certainly mine, and my flower garden often reflects that. Blue flowers can be surprisingly hard to find, though. Yellows, pinks, and oranges bloom everywhere you look, but blue flowers are a little more rare. To me, that just makes them all the more special. I love to pair them with pink or yellow for a wonderful contrast. A garden full of cool white and blue flowers is also a balm for the eyes on a hot summer day. If you’d like to add more blue blooms to your garden this year, here are some favorites to seek out.

Blue Flowers Bellflower

Balloon Flower. (Platycodon grandiflorus.) Perennial, zones 3 – 8. (Blooms second year from seed.)

Cornflower (Centaurea cyanus). Perhaps the bluest of all blue flowers, cornflower is an annual usually grown from seed.

Delphiniums. They also come in pink and white, but delphiniums are some of the best blue flowers available. Perennial, zones 4 – 8.

Blue Flowers Delphinium

Statice (Limonium). Commonly grown for dried flower arrangements. Grown as an annual in most zones.

Morning Glory. (Ipomoea) Look for the ‘Heavenly Blue’ for the best blue blooms. Can be somewhat aggressive.

Salvia sp. There are many blue salvia species, including Black and Blue Sage, Mealycup Sage, Pitcher Sage, and Meadow Sage. This variety makes it easy to find the right ones for your garden.

Blue Flowers Salvia

Balloon Flower. (Platycodon grandiflorus.) Perennial, zones 3 – 8. (Blooms second year from seed.)

Morning Glory. (Ipomoea) Look for the ‘Heavenly Blue’ for the best blue blooms. Can be somewhat aggressive.

Plumbago. Best suited to zones 9 and higher, but can be overwintered in zones 7 and 8.

Blue Flowers Plumbago

Cardinal Flower. (Lobelia siphilitica) Cardinal Flower comes in bright red and cool blue. Prefers moist soil, zones 4 – 9.

Blue Daze (Evolvulous). Annual for most, perennial in zones 9 and higher.

Spiderwort. (Tradescantia sp.) A native wildflower, spiderwort boasts bright yellow stamens that emphasize the blue flowers.

Blue Flowers Spiderwort

Jill Staake
Jill lives in Tampa, Florida, and writes about gardening, butterflies, outdoor projects and birding. When she's not gardening, you'll find her reading, traveling and happily digging her toes into the sand on the beach.