Blue Flowers
Genuinely blue flowers are surprisingly rare in nature, which makes the ones that do exist especially prized by gardeners looking to add a cool, calming tone to a bed.
Reliable Blue Choices
Delphinium, cornflower, and morning glory offer genuinely convincing blue tones and are relatively easy to grow compared to some of the rarer true-blue specialists. Certain hydrangea varieties can also shift toward blue when grown in acidic soil, offering a large, dramatic blue bloom.
Many flowers marketed as "blue" are technically shades of purple or violet, since true blue pigment is genuinely uncommon in the plant world.
Blue flowers pair beautifully with white or silver-foliage plants, which help the relatively cool, muted blue tones stand out rather than get lost against green foliage.
A Calming Presence
Blue is often described as a calming, cooling color in garden design, making it a popular choice for restful spots meant for relaxing rather than the high-energy areas warmer colors suit better.