20 Plants With Blue Flowers That Add a Pop of Color

You notice blue differently than other colors in the garden. It stops you for a second. Tucked between greens and soft neutrals, blue flowers feel cool, calming, and just unexpected enough to stand out without shouting.

They have a way of changing the mood of a space. Blue can make a garden feel larger, quieter, even a little dreamlike. It pairs effortlessly with leafy greens, soft whites, and warm stone, adding contrast while keeping things balanced.

That’s why a single blue bloom can feel more intentional than a whole bed of louder color.

If your garden feels like it’s missing something, but you can’t quite name what, blue might be it. These blue-flowering plants bring subtle drama and depth, proving that color doesn’t have to be bold to make an impact.

Bluebell

Graceful bluebells hang in loose clusters, washing the garden with rich sapphire tones. Each bell shaped bloom nods on slender stems, catching the light in shades of violet and sky blue. In a shady border or woodland path, these hardy spring flowers spread softly and ask for little care. Gardeners welcome them as easy blue accents that brighten fresh green foliage.

Hydrangea

Towering against the house, this blue hydrangea shrub bursts with globe shaped blooms. Clusters of sky and cornflower petals catch the light and soften hard edges. Throughout summer, rich green foliage frames the flowers and fills empty walls with life. Gardeners use hydrangeas to add instant curb appeal along paths and driveways. With regular watering and partial shade, the shrubs reward you with generous blue color.

Delphinium

Soaring delphinium spires bring a bold rush of blue to garden borders. Petals glow in rich ocean tones with white centers that seem to sparkle. Planted in groups, these tall perennials frame lower blooms and guide the eye through the bed. Gardeners often tuck them behind roses or peonies for a layered backdrop of color. With regular watering and staking, the stems reward you with weeks of showy blue flowers.

Lobelia

Tiny Veronica speedwell blooms spread like a soft blue carpet and bring instant color to bare spots. Each flower shows fine violet veins that lead into a white center, adding charming detail up close. Gardeners tuck this low groundcover along paths and in rock gardens. It fills gaps between stepping stones and pairs well with taller plants with blue flowers for a layered look.

Aster

Blue asters bring a cheerful pop of color with their golden centers and layers of soft petals. Each bloom glows in evening light, blending cornflower and lavender tones. In late summer, these sturdy perennials fill borders and containers with rich blue flowers. Gardeners love them as easy partners for grasses and mums, since they attract pollinators and keep the garden lively.

Forget-Me-Not

Forget me nots scatter tiny blue stars across the garden floor. Their clear petals and golden centers shine against fresh green leaves in spring. Plant them along paths, beneath shrubs, or in containers to weave soft color between taller flowers. These easygoing blooms spread gently and bring a nostalgic touch that feels both cheerful and calming. Bees and butterflies visit often, keeping the small patch buzzing.

Bachelor’s Button

Bold perennial cornflowers send up shaggy blue blossoms with rich purple centers that light up a meadow style border. Around each bloom, soft gray green leaves frame the color and keep the plant looking fresh. Gardeners tuck these tough plants into sunny beds where they shrug off poor soil and drought. Bees and butterflies flock to the fringed petals from late spring through summer.

Blue Salvia

Tall blue salvia spikes sway in the breeze and paint the border with rich cobalt shades. Clouds of tiny flowers cluster along the stems and create a soft haze of color. Plant them in sunny beds or containers where their vertical lines add structure. Mass several together for a striking ribbon of blue. Pollinators flock to the nectar rich blooms. In summer they keep the garden glowing.

Bellflower

Rock bellflower spills soft blue blooms across warm stone ledges. Each starry flower clings to tiny pockets of soil and brightens the cracks. This hardy ground cover thrives in rock gardens and wall crevices where little else grows. Gardeners use it to add a cool pop of blue beside steps, patios, and paths. In summer the bell shaped blooms attract pollinators and soften hard stone edges with gentle color.

Periwinkle

Periwinkle groundcover sends out glossy leaves sprinkled with cool blue flowers. Each five petaled bloom opens like a tiny pinwheel and brightens shade. Along paths, under shrubs, or at the base of trees, it quietly spreads. Gardeners use this hardy plant to fill bare soil with soft color. Pollinators visit often, so even a shady corner feels alive and cheerful.

Gentian

Compact gentian clumps push up rich blue buds that open like tiny cups. Around each stem, glossy leaves hold the flowers up from the mossy ground. In a rock garden or trough, this alpine treasure adds an intense splash of blue. Gardeners plant it near paths so the detail can be seen. Bees appreciate its late season nectar. Cool blooms stand out against warm stone and gravel.

Blue Fescue

Blue fescue grass sends up airy flower spikes that shimmer in cool tones. Slender stems catch every breeze and give beds gentle movement. Planted in drifts, this ornamental grass lays a soft blue haze behind brighter blooms. Gardeners tuck it at the front of borders or in containers for color that lasts well into fall. Even in winter, clumps of steel blue foliage keep the garden interesting.

Iris

Blue veined iris opens like a watercolor painting in the middle of the garden. Petals streaked with violet and white fan out from tall green stems and draw the eye from across the yard. In early summer these blooms love moist soil near ponds or rain gardens. Gardeners group several together for a bold pop of blue that pairs well with ornamental grasses and hostas.

Morning Glory

Blue morning glories unfurl like glowing trumpets along the garden fence. Their sky colored petals fade to a soft white throat that seems lit from within. Trained on trellises, these quick climbers cover bare walls and railings in a single season. Early each day, fresh blooms open with the sun. Gardeners love the bold pop of blue that greets them with morning coffee.

Campanula

Campanula sends down nodding bells in rich shades of sky blue, softening every border. Slender stems hold clusters of blooms that sway with each breeze and glow against deep green foliage. Tuck these perennials beside paths, in cottage beds, or near garden benches for a gentle pop of color. Pollinators slip into the bell shaped flowers, keeping the planting lively from early summer well into fall.

Scilla

Clusters of glory of the snow burst into rich blue stars while other soft pink blooms weave through the clump. Their golden stamens sparkle against cool petals and wake up the garden after winter. Plant the bulbs in drifts beneath trees or along paths. They return each year, spreading gently and adding a bright pop of blue to early beds. Bees quickly find these flowers.

Blue Flax

Blue flax scatters delicate sky flowers along slender stems, giving borders a light, meadow feel. Each petal shows fine violet veins that glow in morning sun. When planted in drifts, these hardy perennials thread soft color through grasses and other wild style plants. Gardeners sow them along paths and in gravel gardens where the flowers sway and sparkle on every breeze.

Chia

Blue eyed grass scatters tiny sapphire blooms through slender, arching blades. Each flower opens like a star, with bright yellow stamens that catch the light. In a meadow bed or natural corner, these wiry stems add a soft wash of blue. Gardeners sow clumps near paths so the detail can be seen. Pollinators visit often, turning this airy plant into a small, buzzing show.

Plumbago

Trailing vinca sends glossy stems across the ground, scattered with bright blue stars. Each flower opens like a pinwheel and stands out against deep green leaves. Gardeners often plant it under shrubs or along shady paths where grass fails. Spreads gently and covers bare soil with long lasting color. Bees pause on the blooms, bringing soft movement and life to quiet corners.

Blue Star

Glory of the snow spreads across the lawn in a sea of soft blue flowers. Each star shaped bloom shines with a pale center and bright tips. In early spring, these small bulbs wake the garden before most plants stir. Gardeners tuck them beneath trees and shrubs. Over time, clumps naturalize and create a dreamy meadow effect filled with cheerful blue color.

Brunnera

Alpine forget me nots cluster in tight sprays of vivid blue flowers, each with a tiny yellow eye. Soft silver leaves cradle the blooms and add contrast to the rich color. Tuck this low plant along paths, in rock gardens, or at the front of sunny borders. It spreads gently and returns each spring, giving your beds a bright pop of long lasting blue.

Ceanothus

Masses of Ceanothus blooms form dense clusters of rich violet blue. Each tiny flower holds bright golden stamens that sparkle in the light. Glossy evergreen leaves frame the color and give the shrub structure. Planted along fences or driveways, it turns spaces into features. Gardeners in mild climates treasure this drought tolerant shrub for easy care. From spring onward, it delivers blue flowers that add a pop of color.