Blue can be a difficult color to find naturally occurring in flowers. Luckily big blooms like Hydrangea offer light, sky-blue petals and Irises can blossom in classic, royal-blue. Traditionally, an emblem of peace and calm, blue can bring some serenity to your backyard.
Regardless of which growing zone you live in, there is sure to be a flower that will fit your garden’s needs. Scroll through to learn more about sun and soil needs as well as a growing tip for each hue of blue.
Browse Blue Flower Bouquets
Cornflower Centaurea cyanus
Cornflowers are annuals with ruffled, bright blue blooms that attract bees and butterflies.
Soil Needs
Well-drained
Sunlight Needs
Full Sun
Growing Zones
2 - 11
Flower Tip
Cornflower does not transplant well. Rather than planting them indoors, sow the seeds in fall or early spring.
Globe Thistle Echinops ritro
Named after its globe-like shape, this perennial had prickly green leaves with round violet blue flower heads.
Soil Needs
Well-drained
Sunlight Needs
Full Sun/Partial Shade
Growing Zones
3 - 9
Flower Tip
Be sure to deadhead but wait to cut the blooms back until early spring.
Iris Iris sibirica
Iris flowers grow atop attractive, grass-like leaves. The showy blooms appear in May and thrive well into June.
Soil Needs
Moist
Sunlight Needs
Full Sun/Partial Shade
Growing Zones
3 - 9
Flower Tip
Irises are relatively low maintenance, but do love wet feet. They grow best near ponds or streams.
Hydrangea Hydrangea macrophylla
These big, sky blue blooms will definitely brighten up your garden. They have large heads composed of many smaller flowers.
Soil Needs
Moist, Well-drained
Sunlight Needs
Full Sun/Partial Shade
Growing Zones
4 - 9
Flower Tip
Increasing the acidity of the soil with help your hydrangeas turn a clearer blue
Empire Blue' Butterfly Bush Buddleia davidii
The Butterfly Bush had lance-shaped leaves with arching branches. This variety had scented pale blue flowers that lure wildlife.
Soil Needs
Well-drained
Sunlight Needs
Full Sun
Growing Zones
5 - 10
Flower Tip
Buddleia is one of the most fragrant shrubs and is almost guaranteed to attract butterflies and hummingbirds.
Oxford Blue Eryngium bourgatii
Oxford Blue forms clumps of thin leaves with prominent, white veins and cone-shaped flowers. The Flower heads are dark blue with spiny bracts.
Soil Needs
Dry, Well-drained soil
Sunlight Needs
Full Sun
Growing Zones
9 - 11
Flower Tip
This flower attracts bees, butterflies and birds. Parts of this plant are poisonous to human and can be dangerous if ingested.
Blue Delphiniums Delphinium
Delphiniums are a hardy perennial with soaring floral spires. They are popular for cottage-style gardens and make great cutting flowers!
Soil Needs
Well-drained
Sunlight Needs
Full Sun/Partial Shade
Growing Zones
3 - 7
Flower Tip
Stake taller varieties to keep these towering blooms from toppling over.
Periwinkle Corydalis flexuosa
Periwinkle produces foliage reminiscent of ferns with fragrant, periwinkle blue flowers.
Soil Needs
Well-drained
Sunlight Needs
Partial Shade
Growing Zones
4 - 8
Flower Tip
Periwinkle is grown most often as a ground cover. Once established, this plant needs little care as it is drought resistant.
Forget-Me-Nots Myosotis scorpioides
These tiny, sky-blue flowers grow above bright green foliage in the summer. Forget-Me-Nots have either white, pink or yellow centers.
Soil Needs
Moist, Well-drained
Sunlight Needs
Partial Shade
Growing Zones
3 - 8
Flower Tip
Care is minimal with this perennial. The flower spreads easily and self-seeds.
Gentians Gentiana verna
Gentiana Verna is an alpine flower that blooms in an intense, bright blue with white centers.
Soil Needs
Moist, Well-drained
Sunlight Needs
Full Sun/Partial Shade
Growing Zones
3 - 8
Flower Tip
Plants belonging to this genus are low-growing and hardy. They can be difficult to grow and may be best purchased as plants from garden centers.
Perennial Geranium Geranium
These perennial blue flowers produces a seemingly endless supply of flowers ranging from white to deep blue and bloom from June to frost.
Soil Needs
Moist, Well-drained
Sunlight Needs
Full Sun/Partial Shade
Growing Zones
4 - 8
Flower Tip
Best to pair this summer bloom with spring-blooming bulbs like hyacinth or daffodils
Brunnera Brunnera macrophylla
This shady garden plant blossoms with pale blue flowers in the spring.
Soil Needs
Moist, Well-drained
Sunlight Needs
Shade
Growing Zones
3 - 7
Flower Tip
If you are looking for more of a pop, opt for the variegated version of the Brunnera's heart-shaped leaves.
Grape Hyacinth Muscari
Hyacinths grow from spring-flowering bulbs and produce small bundles of blue blossoms.
Soil Needs
Well-drained
Sunlight Needs
Full Sun/Partial Shade
Growing Zones
4 - 8
Flower Tip
This flower is classically paired with yellow daffodils.
Clematis Clematis
These vines bloom in a variety of colors and can often be found climbing up a trellis or small tree.
Soil Needs
Moist, Well-drained
Sunlight Needs
Full Sun
Growing Zones
3 - 9
Flower Tip
Clematis pairs well with climbing roses.
Bluestar Amsonia tabernaemontana
The Bluestar plant produces clusters of star-shaped flowers in late spring. Towards the end of the season, the foliage turns yellow.
Soil Needs
Well-drained
Sunlight Needs
Full Sun/Partial Shade
Growing Zones
3 - 9
Flower Tip
Bluestar is heat, drought, deer and rabbit-resistant.
Salvia Salvia
While this flower comes in different shades, opt for Savlia azurea or Salvia patens for a true blue variety.
Soil Needs
Well-drained
Sunlight Needs
Full Sun
Growing Zones
3 - 9
Flower Tip
Salvia is heat, drought, deer and rabbit-resistant.
Bellflower Campanula
True to its name, Bellflower has bell-shaped blooms that come in blue, violet, pink and white.
Soil Needs
Well-drained
Sunlight Needs
Full Sun
Growing Zones
3 - 9
Flower Tip
The longer stemmed varieties make great cut flowers.
Morning Glory Ipomoea tricolor
This beloved vine grows easily and produces round sky blue flowers. Morning Glory varieties can also come in pink, red, purple and white.
Soil Needs
Well-drained
Sunlight Needs
Full Sun
Growing Zones
3 - 10
Flower Tip
Be patient. Morning Glories take a few months to flower and need full sun.
Blue False Indigo Baptisia australis
The flowers of the Baptisia are so blue they were once used for making blue dye by Native Americans.
Soil Needs
Well-drained
Sunlight Needs
Full Sun/Partial Shade
Growing Zones
3 - 9
Flower Tip
Baptisia takes time to grow but creates deep roots. Do not try to move this plant.
Harvestbells Gentiana saponaria
This low-growing perennial, has blue-violet petals with a green or red central stem. The notable fragrance can attract wildlife.
Soil Needs
Moist
Sunlight Needs
Partial Shade/Shase
Growing Zones
6 - 8
Flower Tip
The Genetian species grows best in sandy soil but will tolerate different types.
Georgia Blue Veronica umbrosa
Georgia Blue has sky blue petals that attract butterflies. It is low maintenance and works well as a companion ground cover to spring bulbs.
Soil Needs
Well-drained
Sunlight Needs
Full Sun/Partial Shade
Growing Zones
4 - 8
Flower Tip
This plant is fairly versatile and requires little maintenance.
Agapanthus Agapanthus africanus
Known as the Lily of the Nile, the African Lily grows large clusters of blue or white flowers. The blooms hold above their grass-like foliage throughout most of the summer.
Soil Needs
Moist, Well-drained
Sunlight Needs
Full Sun
Growing Zones
6 - 11
Flower Tip
This tender perennial does best when stored away from the cold during winter.
The Blue Mist Shrub Caryopteris clandonensis
As its name states, this flowering shrub creates a mist of blue blooms in late summer. It attracts bees who love its rich nectar.
Soil Needs
Well-drained
Sunlight Needs
Full Sun/Partial Shade
Growing Zones
5 - 9
Flower Tip
Cut this plant within inches of the ground each spring to ensure new wood which creates new blooms.
Himalayan Blue Poppy Meconopsis betonicifolia
This rich true blue flower is a garden treasure. Himalayan Poppies are heavily sought after and can be very tempermental.
Soil Needs
Moist, Well-drained
Sunlight Needs
Partial Shade
Growing Zones
7 - 8
Flower Tip
This flower is notoriously difficult to grow because it is native of the climate of Tibet. When attempting to grow this flower, keep its origin in mind and try to replicate that in your own garden.
Love in Mist Nigella damascena
The name Love in Mist is derived from the airy foliage that surrounds the gentle, blue blooms. Grow these in your garden for a unique cut flower.
Soil Needs
Well-drained
Sunlight Needs
Full Sun/Partial Shade
Growing Zones
4 - 9
Flower Tip
These plants do not like to be moved but can grow from scattered seeds with littler effort.
Lungwart Pulmonaria officinalis
Lungwort is one of the earliest to bloom in springtime. They come in several colors. The green-leaved variety has the most brilliant blue.
Soil Needs
Moist, Well-drained
Sunlight Needs
Shade
Growing Zones
3 - 9
Flower Tip
Pulmonarias love shade and woodland settings.
Siberian Squill Scilla sibirica
Named for the environment they grow best in, Siberian Squill create small blue blossoms that can naturalize in your lawn. Transform your yard into a sea of blue.
Soil Needs
Well-drained
Sunlight Needs
Full Sun/Partial Shade
Growing Zones
2 - 8
Flower Tip
The tiny bulbs can grow as long as they are given a rest in a cooler winter. They will bloom in early spring.
Columbine Aquilegia
Columbines bloom in the springtime from dark green foliage that turn maroon in the fall. The bell-shaped flowers come in a variety of colors and are a favorite of hummingbirds.
Soil Needs
Well-drained
Sunlight Needs
Full Sun/Partial Shade
Growing Zones
3 - 8
Flower Tip
These perennials are not too particular but prefer mild climates. Give them plenty of mulch to keep the soil moist and insulated through winter.
Flax Linum usitatissimum
Flax is a food and fiber crop, popular in cooler regions. Linen is produced from flax as is linseed oil.
Soil Needs
Well-drained
Sunlight Needs
Full Sun
Growing Zones
3 - 9
Flower Tip
This wildflower is easy to grow from seed and is adaptable but prefers sandy soil.
Lobelia Lobelia
Lobelia is an annual herb that blooms in the summertime until the first frost. Most varieties are compact and can be found in many different color. Violet-blue is the most commonly seen variety.
Soil Needs
Moist, Well-drained
Sunlight Needs
Full Sun
Growing Zones
4 - 9
Flower Tip
Annual Lobelia will grow almost anywhere and can be grown from see or transplanted.
Lupine Lupinus
Lupine comes in a wide array of colors and appears similar to sweet peas with floral spikes that emerge from a tall green stem.
Soil Needs
Well-drained
Sunlight Needs
Full Sun
Growing Zones
3 - 9
Flower Tip
If you are growing Lupine from seeds, try a 7-day cold treatment. It will increase germination. Simply wrap seeds in a damp paper towel and store in the refrigerator.
Sweet pea Lathyrus odoratus
Sweet peas come in many lovely colors and give off a fragile fragrance that is commonly used in perfumes.
Soil Needs
Well-drained
Sunlight Needs
Full Sun
Growing Zones
7 - 10
Flower Tip
Sweet peas are slow to germinate, making them somewhat difficult to grow. They are quite hardy once they develop.
Veronica Veronica
Veronica, also known as Speedwell, is a perennial with long spikes of small petals. It will grow up to 3 feet tall and bloom from spring to fall.
Soil Needs
Well-drained
Sunlight Needs
Full Sun/Partial Shade
Growing Zones
4 - 11
Flower Tip
These annuals are easy to grow and will help make butterflies and hummingbirds frequent guests in your garden
Glory-of-the-snow Chionodoxa
Soil Needs
Well-drained
Sunlight Needs
Full Sun/Partial Shade
Growing Zones
4 - 8
Flower Tip
Plant this early bloomer in the fall and wait for the show.
Poorman's Weatherglass Anagallis arvensis
This plant is said to predict the weather as it opens on sunny days and closes when it is overcast or rain is approaching.
Soil Needs
Well-drained
Sunlight Needs
Full Sun/Partial Shade
Growing Zones
5 - 10
Flower Tip
Poor Man's Weather Glass does not transplant well but is easy to grow once settled.
Birdbill Dayflower Commelina dianthifolia
This beautiful, intensely blue flower blooms one by one from green bracts that appear similar to a cocoon. Each flower has three blue petals and yellow stamens.
Soil Needs
Moist, Well-drained
Sunlight Needs
Full Sun/Partial Shade
Growing Zones
7 - 10
Flower Tip
The Birdbill Dayflower does best in containers. Each bloom only lasts for a day, hence the name.
Mountain Larkspur Delphinium scaposum
The richly blue flowers are loosely clustered on a tall, slender stalk. All parts of the plant are poisonous so be careful!
Soil Needs
Moist, Well-drained
Sunlight Needs
Full Sun/Partial Shade
Growing Zones
2 - 10
Flower Tip
The Mountain Larkspur grows best in rocky hillsides and deserts.
Bluecrown Passionflower Passiflora caerulea
The Bluecrown Passionflower is native to South America and is a vigorous, tendril vine that can grow 33 feet or more. This complicated flower has several layers of petals that can range in color.
Soil Needs
Well-drained
Sunlight Needs
Full Sun/Partial Shade
Growing Zones
6 - 10
Flower Tip
This plant is a widely cultivated climber. It is also one of the hardiest passion flower and will regrow even after severe freezes.
Desert Bluebells Phacelia campanularia
Desert Bluebells are aptly named. They are a rich blue-violet with oblong, bell-shaped leaves.
Soil Needs
Well-drained
Sunlight Needs
Full Sun
Growing Zones
7 - 10
Flower Tip
This flowers grow best in the desert and prefer sandy, gravelly areas. They are drought-tolerant and suitable for xeriscaping.
Stiff Blue-eyed Grass Sisyrinchium demissum
This perennial is a member of the Iris family and not a grass at all. Stiff Blue-eyed Grass can be grown in almost any soil and will attract wild birds.
Soil Needs
Well-drained
Sunlight Needs
Full Sun
Growing Zones
4 - 9
Flower Tip
The tall foliage does best in full sun. Keep this in mind when choosing a spot to plant it. Also remember to cut them back after they turn brown.
Scabiosa Scabiosa
Also known as pincushion flowers, Scabiosa is an interesting flower with a pincushion-like center and an outer layer of petals.This summer bloomer can be found most often in shades of blue, white and purple.
Soil Needs
Well-drained
Sunlight Needs
Full Sun
Growing Zones
3 - 7
Flower Tip
In order to keep the plant flowering, you must remove withering blooms.
- White Flowers
- Yellow Flowers
- Orange Flowers
- Red Flowers
- Purple Flowers
- Blue Flowers
- Green Flowers
- Black Flowers
Photo Credit: Empire Blue’ Butterfly Bush via Ptelea, Oxford Blue via Magnus Manske, Periwinkle via Ryan Kaldari, Forget-Me-Nots via Rude, Brunnera via Kor!An (Андрей Корзун), Bluestar via Topjabot, Blue False Indigo via Jean-Pol GRANDMONT, Harvestbells via Yel D’ohan, Georgia Blue via TeunSpaans, The Blue Mist Shrub via CTHOE, Himalayan Blue Poppy via Pimpinellus, Love in Mist via LoopZilla, Lungwart via Hectonichus, Siberian Squill via Pudelek, Flax via Magnus Manske, Glory-of-the-snow via Audrey, Poorman’s Weatherglass via Hans Hillewaert, Birdbill Dayflower via peganum, Mountain Larkspur via S. Zenner, Bluecrown Passionflower via Petar Milošević, Desert Bluebells via Miwasatoshi, Stiff Blue-eyed Grass via Dcrjsr, Scabiosa via Leonora (Ellie) Enking.