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.

flower-colors-header-blue

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.


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.