Finding true blue flowers for your garden can be a difficult task. That’s why I’m thrilled to share with you an exciting list of stunning true blue flowers.I’ve included a photo of each plant along with my personal experience and all of the important details you need to decide which blue flower is right for your landscape!
Make sure you scroll to the bottom of this post for a table that includes the size, bloom times and key features of each plant in this list!
Looking for a different flower color? Check out my complete list of flowers arranged by color.
Salvia Mystic Spires
Salvia ‘Balsalmisp’
- Growing Zones: 7-9
- Light: Full Sun
- Size: 18-24″ H x 12-18″ W
- Flower Color: Blue-violet
- Foliage Color: Gray-green
- Bloom Time: Summer
- Growth Rate: Medium
- Native Range: Central and southeastern Europe and central Asia
- Purchase Here
Salvia ‘Balsalmisp’ is a compact, easy-care perennial known for its striking blue-violet flowers that attract pollinators like butterflies, bees, and hummingbirds. Its compact size and vibrant blue flowers make it a charming addition to any garden or landscape.
With a mature height of 18-24 inches and a spread of 12-18 inches, this plant thrives in full sun and well-drained soil. It blooms profusely in summer for approximately 6 weeks and features gray-green foliage.
This salvia variety is native to central and southeastern Europe as well as central Asia, making it well-suited to growing zones 7-9.
First Glory Veronica (Speedwell)
Veronica longifolia ‘Allord’
- Growing Zones: 4-9
- Light: Full Sun
- Size: 18-24” H x 15-18” W
- Flower Color: Blue
- Foliage Color: Green
- Bloom Time: Summer for 6 weeks
- Growth Rate: Medium
- Native Range: Central and southeastern Europe and central Asia
- Purchase Here
First Glory Speedwell (Veronica longifolia ‘Allord’) is a medium-sized perennial plant with striking blue flowers that bloom for about six weeks in the summer.
It grows well in full sun and is ideal for zones 4-9. This plant reaches a height of 18-24 inches and spreads 15-18 inches wide.
Its deep blue flowers attract pollinators like butterflies and hummingbirds while its green foliage adds to its appeal. This Veronica variety is relatively low maintenance, with medium water needs and resistance to deer.
Originating from central and southeastern Europe as well as central Asia, it adds a touch of vibrant color and texture to gardens and landscapes.
Globe Thistle
Echinops ritro
- Growing Zones: 3-8
- Light: Full Sun to Part Shade
- Size: 3-5’ H x 2-2.5’ W
- Flower Color: Purple-Blue
- Foliage Color: Gray-Green
- Bloom Time: Summer to Fall
- Growth Rate: Medium
- Native Range: southern and eastern Europe (from Spain east to Turkey, Ukraine, and Belarus) and western Asia
- Purchase Here
Globe Thistle (Echinops ritro) is a perennial plant featuring unique, purple-blue round, spikey flower clusters atop blue-green hairy foliage. It adds a contemporary touch to gardens, thriving in full sun and well-drained soil.
Globe Thistle attracts pollinators, blooming summer to fall. It also provides winter interest with its seedheads. It’s also resistant to drought, deer and rabbits.
I grow globe thistle in my own garden and it’s very unique and easy to care for. In my garden, I grow it as a companion plant with butterfly milkweed and coreopsis.
Blue Boy Bachelor’s Button; Cornflower (Annual)
Centaurea cyanus
- Growing Zones: Annual
- Light: Full Sun
- Size: 24-36” H x 12” W
- Flower Color: Sky Blue
- Foliage Color: Blue-Green
- Bloom Time: Summer for 6 weeks
- Growth Rate: Fast, from seed to bloom in 65 days
- Native Range: Central and southeastern Europe and central Asia
- Purchase Seeds Here
Bachelor’s Buttons (Centaurea cyanus), also known as Cornflower is a delightful blue flower addition to home gardens with full sun. With a mature height of 24-36 inches and a width of 12 inches, it presents a compact yet eye-catching presence.
The true blue flowers and blue-green foliage create a soothing color palette, especially during its blooming period in summer. Blooms last for about six weeks. This plant has a faster growth rate, only 65 days from seed to bloom.
A cool thing about Bachelor’s Buttons is that the flowers are actually edible. While this flower is an annual, it will typically reseed from year to year around your garden (but not aggressively). It makes a great cut flower, attracts pollinators and is drought and deer resistant.
Sky Blue Aster
Symphyotrichum oolentangiense (Aster azureus)
- Growing Zones: 3-8
- Light: Full Sun to Part Shade
- Size: 2-3’ H x 18-24” W
- Flower Color: Blue
- Foliage Color: Green
- Bloom Time: Late August to October
- Growth Rate: Medium
- Native Range: North America
- Purchase Here
Sky Blue Aster (Symphyotrichum oolentangiense), also known as Aster azureus) is a charming fall perennial featuring sweet blue daisy-shaped flowers. With its airy texture, it complements shorter groundcovers and taller perennials or small shrubs in gardens.
Thriving in full sun and well-drained soils, Sky Blue Aster reaches a height of 2-3’ and spreads 18-24” wide.
Blooming from late August to October, this North American native wildflower is a butterfly magnet, adding beauty to landscapes during the later part of the growing season.
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Jack Frost Brunnera
Brunnera macrophylla ‘Jack Frost’
- Growing Zones: 3-8
- Light: Part Shade to Full Shade
- Size: 12-18″ H x 18-24″ W
- Flower Color: Blue
- Foliage Color: Green with Silvery Overlay
- Bloom Time: Early Spring
- Growth Rate: Medium
- Native Range: Eastern Europe and Russia including Siberia
- Purchase Here
Jack Frost Brunnera (Brunnera macrophylla ‘Jack Frost’) features frosty silver leaves resembling cracked porcelain, providing a brilliant backdrop to bright, baby blue flowers in early spring.
Ideal for shady gardens, this compact plant grows 18-24” wide and just as high, making it easy to tuck into any shady garden.
Thriving in full to partial shade, this deer-resistant and bee-friendly perennial requires minimal care.
Butterfly Blue Scabiosa
Scabiosa ‘Butterfly Blue’
- Growing Zones: 4-8
- Light: Full Sun
- Height x Spread: 12-18” H x 12-18” W
- Flower Color: Blue
- Foliage Color: Gray-Green
- Bloom Time: May to Frost
- Growth Rate: Medium
- Native Range: Europe, Africa, and western Asia, from Sweden to Angola
- Purchase Here
Scabiosa Butterfly Blue (Scabiosa ‘Butterfly Blue’) is a charming perennial plant with delicate Dutch blue flowers. This clump-forming plant features showy floral “pincushions” with small white pins.
It also attracts butterflies, making it a pollinator-friendly choice. The blooms are excellent for cut flower arrangements.
This plant features gray-green foliage and is a long bloomer; from May to frost. Scabiosa Butterfly Blue thrives in sunny locations, making it perfect for rock gardens. It prefers well-drained soil, full sun and can tolerate coastal conditions.
Mr. Fokker Anemone
Anemone ‘Mr. Fokker’
- Growing Zones: 7-10
- Light: Full Sun to Part Shade
- Size: 8-10” H x 2-4” W
- Flower Color: Blue with black centers
- Foliage Color: Blue-Green
- Bloom Time: Spring
- Growth Rate: Fast
- Native Range: Mediterranean
- Purchase Here
Anemone ‘Mr. Fokker’ is a charming perennial plant renowned for its unique blue blooms with dramatic black centers. Growing up to 8-10 inches in height, this plant thrives in zones 7-10, requiring full sun to partial shade. Anemone’s thrive in well-drained, sandy soil.
Its striking blue flowers, featuring layered broad petals forming a saucer-like appearance, create a mesmerizing display in spring. This low-maintenance plant, with its velvety texture and long-lasting blooms, adds sophistication to any garden.
Mr. Fokker Anemones are ideal for low-growing blue flower enthusiasts and are perfect for containers or floral arrangements due to their strong stems and lasting quality. These resilient flowers can be planted in fall and bloom throughout spring when placed in full sun, making them a favorite among gardeners seeking reliable and vibrant blue blooms.
Pearl Deep Blue Bellflower
Campanula carpatica ‘Pearl Deep Blue’
- Growing Zones: 3-8
- Light: Full Sun to Part Shade
- Size: 6-8″ H x 12-24″ W
- Flower Color: Vivid Blue-Violet
- Foliage Color: Dark Green
- Bloom Time: Late Spring to Late Summer
- Growth Rate: Medium
- Native Range:
- Purchase Here
Pearl Deep Blue Bellflower (Campanula carpatica ‘Pearl Deep Blue’) is a charming addition to any garden, Zones 3-8. It’s known for its cup-shaped, vivid blue-violet flowers that adorn the dark green foliage throughout late spring to late summer. With a compact clump formation, it suits edging, borders, containers, or rocky landscapes.
Thriving in various soils and exhibiting a preference for cooler root conditions, bellflowers are adaptable to full sun or partial shade, especially benefitting from summer mulch during hotter periods. Deer and rabbit resistant, it attracts butterflies, making it a delightful addition to gardens while remaining relatively low-maintenance. It’s an ideal flower for edging, borders or containers.
With a preference for cooler roots, it’s a low-maintenance addition that adds vibrant blue hues to gardens during its late spring to late summer blooming season.
Virginia Bluebell
Mertensia virginiana
- Growing Zones: 3-8
- Light: Part Shade to Full Shade
- Size: 12-24” H x 12-18” W
- Flower Color: Pink, Blue, Purple (color-changing blooms)
- Foliage Color: Green
- Bloom Time: Spring, with flowers lasting several weeks
- Growth Rate: Fast
- Native Range: moist woodlands and river flood plains in eastern North America from New York to Minnesota up into Canada (Ontario and Quebec) and from Kansas to Alabama.
- Purchase Here
Virginia Blue Bell (Mertensia virginiana) is a shade-loving perennial plant native to the eastern United States. Its bell-shaped flowers change from pink to blue to lavender, creating a visually stunning display in early spring.
Virginia Blue Bell is hardy and adaptable, suitable for various garden settings, including shaded gardens, forest meadows and beneath trees (even Black Walnut trees!). It attracts pollinators like butterflies, moths and bees. It thrives in moist, shady spaces.
Nancy Garrison Passion Fruit Vine (Passionflower)
Passiflora edulis ‘Nancy Garrison’
- Growing Zones: 4-11 patio / 8-11 outdoors (hardy down to 20°F)
- Light: Full Sun to Part Shade
- Size: 15-20’ H
- Flower Color: White and purple-blue
- Foliage Color: Green
- Bloom Time: Spring through summer
- Growth Rate: Fast
- Native Range: Paraguay, Brazil and Argentina
- Purchase Here
The Nancy Garrison Passion Fruit Vine (Passiflora edulis ‘Nancy Garrison’) is an evergreen vine, resilient in zones 4-11, showcasing stunning white and purple-blue flowers. This fast-growing vine reaches heights of 15-20 feet.
Thriving in full sun, passionflower vine adds a tropical flair to any garden, offering an attractive display and delicious fruits. The fruit is sweet, tart, egg-shaped with purple rinds and orange flesh.
Its continuous blooming from spring through summer results in an abundant harvest of exotic passion fruit, growing well outdoors or in patio containers.
Nancy Garrison Passion Fruit Vine makes an excellent choice for fruit enthusiasts and gardeners alike.
Blue Ice Amsonia (Blue Star)
Amsonia ‘Blue Ice’
- Growing Zones: 4-9
- Light: Full Sun to Part Shade
- Size: 12-16″ H x 18-24″ W
- Flower Color: Dark Lavender Blue
- Foliage Color: Dark Green, turning Bright Yellow in Fall
- Bloom Time: Early Spring
- Growth Rate: Medium
- Native Range: Southeast Europe, Turkey, Japan and Central and Northeast United States
- Purchase Here
Blue Ice Amsonia (Amsonia ‘Blue Ice’) is a hardy native perennial with star-shaped lavender-blue flowers in spring. Its dark green foliage lasts through summer, turning bright yellow in fall.
It’s compact, deer-resistant and drought-tolerant, making it ideal for mass plantings or as a border plant.
Amsonia requires full sun to reach its flowering and fall color potential.
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Double Winky Blue & White Columbine
Aquilegia ‘Double Winky Blue & White’
- Growing Zones: USDA zones 4-8
- Light: Full Sun to Part Shade
- Size: 24-30” H, 12-18” W
- Flower Color: Lavender blue with white edges
- Foliage Color: Blue-green
- Bloom Time: Spring to early summer, with potential for reblooming
- Growth Rate: Medium
- Native Range: Hybrid plant; parent species are native to central and southeastern Europe and central Asia.
- Purchase Here
Double Winky Columbine (Aquilegia ‘Double Winky Blue & White’) is a stunning herbaceous perennial known for its unique double ruffled lavender blue flowers with white edges. It thrives in USDA zones 4-8 and reaches a height of 24-30 inches with a spread of 12-18 inches.
This plant prefers partial shade to full sun and well-drained soil. With its delightful colors and attractive foliage, this columbine variety adds charm and elegance to any garden. Its eye-catching blooms attract butterflies and can be used in flower arrangements. The plant is relatively resistant to deer and rabbits.
Blue Lace Delphinium
Delphinium ‘Blue Lace’
- Growing Zones: 3-7
- Light: Full Sun to Part Shade
- Size: 5-6’H x 18-24”W
- Flower Color: Sky Blue
- Foliage Color: Green
- Bloom Time: Early Summer, Reblooms until Fall
- Growth Rate: Medium
- Native Range: woodlands, meadows, and river banks from Europe to Mongolia
- Purchase Plant Here | Purchase Seeds Here
Blue Lace Delphinium (Delphinium ‘Blue Lace’) is a stunning perennial plant that boasts elegant spires of true sky-blue flowers. Blooming in early summer atop tall, strong stems, this variety features fully double florets with a frilly center touched by a blush of lavender pink. The plant attracts hummingbirds and butterflies, making it a pollinator-friendly choice for gardens.
Blue Lace Delphiniums have a compact habit and are resistant to deer, rabbits and powdery mildew. They require full sun and well-drained soil. This plant creates a bold impact in garden beds and borders. It re-blooms if deadheaded and adds a lush, dramatic look to any landscape.
Victoria Blue Forget-Me-Nots
Myosotis sylvatica
- Growing Zones: 3–8
- Light: Part Shade
- Size: 6″–8″ mound
- Flower Color: Blue with white centers
- Foliage Color: Green
- Bloom Time: Early Spring
- Growth Rate: –
- Native Range: Europe & Asia
- Purchase Seeds Here
The Victoria Blue Forget-Me-Not (Myosotis sylvatica) is a charming, compact plant with eye-catching, star-shaped blue flowers and white centers. It is perfect for adding a pop of color to the front of a garden or as a companion to spring bulbs.
This perennial plant thrives in partial shade and blooms early in the spring, attracting pollinators while also being deer resistant. With its petite size, attractive flowers and deer resistance, it’s a very attractive flower.
However, Myosotis sylvatica (Wood Forget-Me-Not) is listed in the Invasive Plant Atlas of the United States. So, do your research to make sure that it’s safe to plant where you live!
Grape Hyacinth
Muscari latifolium
- Growing Zones: 3-9
- Light: Full Sun
- Size: 6” H
- Flower Color: Pale blue-purple
- Foliage Color: Green
- Bloom Time: Spring
- Growth Rate: Fast
- Native Range: Not specified
- Purchase Here
Grape Hyacinth (Muscari latifolium) is a fragrant, small perennial bulb with pale blue-purple bell-shaped flowers that rise above dense bunches of arching green foliage. It grows in compact 6-inch-tall clumps, making it suitable for naturalizing and in planters, garden beds, rock gardens, and perennial beds.
This low-maintenance plant thrives in full sun and well-drained soil, providing early spring color and attracting pollinators.These are a great option for growing under pine trees.
It can also be forced indoors for winter blooms, making it a versatile and delightful addition to any outdoor or indoor garden space.
Nikko Blue Hydrangea
Hydrangea macrophylla ‘Nikko Blue’
- Growing Zones: 6-9
- Light: Part Shade
- Size: 4-6’ H x 4-6’ W
- Flower Color: Blue or Pink
- Foliage Color: Green
- Bloom Time: Summer
- Growth Rate: Medium
- Native Range: East Asia. Naturalized in China, Korea, Siberia, New Zealand and the Americas. It is an invasive species in the Azores and Madeira archipelagos.
- Purchase Here
Nikko Blue Hydrangea (Hydrangea macrophylla ‘Nikko Blue’) is a popular deciduous shrub with classic fluffy blue blooms. It grows 4-6 feet tall and wide, thriving in partial shade and well-drained soil.
Nikko Blue Hydrangea blooms in summer and is a medium-paced grower. The flower color can vary from blue to pink depending on soil pH.
Variegated Iris (Iris Variegata)
Iris ensata ‘Variegata’
- Growing Zones: 4-8
- Light: Full Sun to Part Shade
- Size: 24” H x 18-24” W
- Flower Color: Purple
- Foliage Color: Golden-striped
- Bloom Time: Summer, for several weeks
- Growth Rate: Medium
- Native Range: Asia from Siberia to Japan
- Purchase Here
Iris Variegata (Iris ensata ‘Variegata’) is a perennial plant with striking variegated green and white foliage. It produces lavender-blue flowers in the summer and thrives in full sun or partial shade. This particular variety is more shade-tolerant than many other species of iris.
This plant blooms for several weeks, reaching a height of 24” and spreading 18-24“ wide. Remove faded foliage as new leaves emerge. It prefers humus-rich, evenly moist, well-drained soil. While preferring regular moisture, once established, it tolerates mild drought.
Cambridge Blue Lobelia
Lobelia erinus ‘Cambridge Blue’
- Growing Zones: 5-9
- Light: Full Sun to Part Shade
- Size: 4″–6″ mound
- Flower Color: Light blue
- Foliage Color: Pale green
- Bloom Time: Spring to frost
- Growth Rate: Medium
- Native Range: Africa
- Buy Seeds Here
Blue Lobelia (Lobelia erinus ‘Cambridge Blue’) is a delightful addition to any garden. With its soft, light blue flowers and pale green foliage, this plant is perfect for adding a touch of color to hanging baskets, containers, window boxes, or borders.
It thrives in full sun to part shade and blooms profusely from spring to fall, attracting beneficial insects and pollinators.
This perennial plant is hardy in USDA zones 5-9 and can grow up to 4-6 inches in height, making it a versatile and attractive choice for various garden settings.
If you liked this, you may also like the Greg Blue Lobelia (Lobelia siphilitica) with tall, leafy spikes of clear blue tubular flowers. It blooms from late summer to mid-autumn and attracts butterflies and hummingbirds, making it a great addition to pollinator gardens. Purchase here from NatureHills.com.
Twinkle Toes Lungwort
Pulmonaria x ‘Twinkle Toes’
- Growing Zones: 3-9
- Light: Part Shade to Full Shade
- Size: 12-14” H x 16-18” W
- Flower Color: Periwinkle Blue (Ages to Violet & Pink)
- Foliage Color: Green & Silver
- Bloom Time: Mid to Late Spring
- Growth Rate: Medium
- Native Range: Europe and western Asia
- Purchase Here
Twinkle Toes Lungwort (Pulmonaria ‘Twinkle Toes’) is a delightful perennial with lovely periwinkle-blue flowers that age to violets and pinks in mid to late spring. Its unique dark green leaves are speckled with silver, making it visually appealing even when not in bloom.
This plant thrives in full shade to partial sun/shade and is perfect for shaded gardens
Twinkle Toes Lungwort is a pollinator-friendly plant, attracting bees and hummingbirds. It is low-maintenance, deer-resistant and suitable for various garden settings, including containers, woodland edges and shaded pathways.
Corsican Violet Viola
Viola corsica
- Growing Zones: 3–8 (perennial)
- Light: Full Sun to Part Shade
- Size: 6–8″ H x 8”–12″ W
- Flower Color: Blue-purple with a small yellow center, surrounded by white “whiskers.”
- Foliage Color: Green
- Bloom Time: Spring to fall
- Growth Rate: Not specified
- Native Range: Southern Europe
- Purchase Here
Corsican Violet Viola (Viola corsica) is a charming perennial viola. This sought-after, heirloom plant brings cheerful, bright, blue-purple flowers to gardens every season.
It thrives in USDA zones 3–8, tolerates heat well, and can be grown as an annual in colder climates. With long stems that elevate the blooms above the foliage, this viola grows to about 6–8 inches tall and 8–12 inches wide. Its blue-purple blooms, each about 1½”–2″ wide, feature a small yellow center and are surrounded by white “whiskers.”
This variety is known for its deer resistance, drought tolerance, and edible flowers, making it a versatile addition to gardens. Whether planted in containers or garden beds, the Corsican Violet Viola adds a delightful pop of color and a touch of Mediterranean charm to any landscape.
Corsican Violet Viola is native to the Mediterranean islands of Corsica, Sardinia, and Tuscany.
Texas Bluebonnet
Lupinus texensis
- Growing Zones: 5-9
- Light: Full Sun
- Size: 8-24″ H x 12″ W
- Flower Color: Blue
- Foliage Color: Green
- Bloom Time: Spring
- Growth Rate: Medium
- Native Range: Texas
- Purchase Seeds Here
Texas Bluebonnets (Lupinus texensis) are beautiful wildflowers native to Texas, known for their captivating blue flowers.
They thrive in full sun and can grow up to 24 inches tall and 12 inches wide. Their blue-green foliage complements their vibrant blue flowers, which bloom in spring.
Bluebonnets attract pollinators, are deer-resistant, and can tolerate drought conditions. They are a perfect choice for naturalized wildflower areas and can self-sow, providing enjoyment year after year.
Hillier™ Porcelain Blue Corydalis
Corydalis flexuosa ‘Porcelain Blue’
- Growing Zones: 5-9
- Light: Part Shade
- Size: 10-12” H x 12” W
- Flower Color: Blue
- Foliage Color: Blue, Green
- Bloom Time: Spring and Summer (exact duration not specified)
- Growth Rate: Medium
- Native Range: parts of China and Japan
- Purchase Here
Hillier™ Porcelain Blue Corydalis (Corydalis flexuosa ‘Porcelain Blue’) is a woodland wildflower with unique trumpet-shaped, baby blue blossoms that dangle elegantly from bronzed stems. It needs moderate yet regular moisture and well-drained soil.
It needs moderate yet regular moisture and well-drained soil.
Preferring partial shade, this perennial plant naturalizes easily, attracting pollinators and hummingbirds.
Porcelain Blue Corydalis forms tidy clumps of blue-green leaves and is highly tolerant of both heat and cold. Ideal for shaded perennial gardens, cutting borders, pollinator beds and rock gardens. Sky Blue Aster
Blue Glitter Sea Holly
Eryngium planum ‘Blue Glitter’
- Growing Zones: 5-9
- Light: Full Sun
- Size: 30-36” H x 18-24” W
- Flower Color: Blue
- Foliage Color: Blue-Green
- Bloom Time: Blooms in summer for 6 weeks
- Growth Rate: Medium
- Native Range: central and southeastern Europe and central Asia
- Purchase Here
Sea Holly (Eryngium planum ‘Blue Glitter’) is a resilient perennial boasting spiny, steel-blue flowers atop silver-blue stems and blue-green leaves.
Blooming in summer and thriving in full sun, this plant is compact, deer-resistant and drought-tolerant.
It adds vibrant blue color and a touch of whimsy to any flower garden.
Chocolate Chip Ajuga (Bugleweed)
Ajuga ‘Chocolate Chip’
- Growing Zones: 4-9
- Light: Full Sun to Part Shade
- Size: 3-6″ H x 6-8″ W
- Flower Color: Blue
- Foliage Color: Green with a Chocolatey colored overlay
- Bloom Time: Mid to late spring
- Growth Rate: Medium
- Native Range: Europe and Asia
- Purchase Here
The Chocolate Chip Ajuga (Ajuga reptans ‘Valfredda’) is a ground-hugging perennial with bluish-purple flowers that rise above its distinctive chocolate-colored foliage.
This compact selection from Italy forms a dense ground cover over time, making it perfect for small spaces needing a pop of color.
It thrives in both sunny and shaded locations and is deer-resistant.
With its mix of foliage colors and striking flowers, this plant is a beautiful and low-maintenance addition to any landscape.
Blue Agapanthus (Lily of the Nile)
Agapanthus africanus
- Growing Zones: 8-10
- Light: Full Sun
- Size: 1-2’ H x 1-2’ W
- Flower Color: Lavender-Blue
- Foliage Color: Green
- Bloom Time: Year-round in hot zones
- Growth Rate: Medium
- Native Range: South Africa
- Purchase Here
Lily of the Nile (Agapanthus africanus), also known as African Lilies, features elegant soft lavender-blue blooms shaped like fireworks.
In zones 8-10, Lily of the Nile blooms year-round and can even remain semi-evergreen in mild winters. The plant is a showstopper with its cornflower blue trumpets and clump-forming green strappy leaves.
These hardy and long-blooming plants are resilient, requiring minimal maintenance. They are perfect for pollinator borders, cottage gardens and cutting gardens. Lily of the Nile is a must-have for gardeners seeking a low-maintenance, visually stunning addition to their flower garden.
Azure Rush Geranium
Geranium ‘Azure Rush’
- Growing Zones: 5-8
- Light: Full Sun to Part Shade
- Size: 15-18″ H x 18-24” W
- Flower Color: Blue-Lavender
- Foliage Color: Green
- Bloom Time: Late Spring through Frost
- Growth Rate: Medium
- Purchase Here
Azure Rush Geranium (Geranium ‘Azure Rush’) is a versatile perennial plant that thrives in growing zones 5-8. It displays striking blue-lavender flowers with darker veins against a backdrop of green foliage.
This plant is ideal for adding a pop of color to gardens and is well-suited for both full sun and partial sun/shade.
With a moderate growth rate, it blooms from late spring through frost, attracting pollinators and adding a vibrant touch to any landscape. Its compact size makes it suitable for various garden arrangements, from mass plantings to border edges.
Tall Blue Planet Ageratum (Bluemink)
Ageratum houstonianum
- Annual
- Light: Full Sun (will tolerate part shade where summers are hot)
- Size: 24-30″ H x 9-12” W
- Flower Color: Blue
- Foliage Color: Green
- Bloom Time: Summer to frost
- Growth Rate: Medium
- Native Range: Central America in Guatemala and Belize and adjacent parts of Mexico
- Purchase Seeds Here
Tall Blue Planet Ageratum (Ageratum houstonianum), also known as BlueMink, features tall, upright and sturdy stems with tight clusters of blue flowers.
It is pollinator-friendly, attracting bees, butterflies and other beneficial insects to gardens. Ageratum is also deer and rabbit resistant!
It is commonly used as a classic filler in mixed bouquets (Harvest when flower spikes are 3/4 open).Ageratum thrives in fertile soil with good drainage and a pH of 5.0-6.0.
Table: Size, Bloom Times and Key Features of Blue Flowers
| Plant Name | Height | Width | Bloom Time | Key Features |
|---|---|---|---|---|
| Mystic Spires Salvia | 18-24″ | 12-18″ | Summer | Compact, blue-violet flowers, attracts pollinators |
| First Glory Veronica | 18-24” | 15-18” | Summer for 6 weeks | Blue flowers, attracts pollinators |
| Globe Thistle | 3-5’ | 2-2.5’ | Summer to Fall | Unique round purple-blue flower clusters |
| Blue Boy Bachelor’s Button | 24-36” | 12” | Summer for 6 weeks | Sky blue flowers, fast growing |
| Sky Blue Aster | 2-3’ | 18-24” | Late August to October | Sweet blue daisy-like flowers |
| Jack Frost Brunnera | 12-18″ | 18-24″ | Early Spring | Blue flowers, frosty silver leaves |
| Butterfly Blue Scabiosa | 12-18” | 12-18” | May to Frost | Blue pincushion-like flowers |
| Mr. Fokker Anemone | 8-10” | 2-4” | Spring | Blue flowers with black centers |
| Pearl Deep Blue Bellflower | 6-8″ | 12-24″ | Late Spring to Late Summer | Blue-violet bell-shaped flowers |
| Virginia Bluebell | 12-24” | 12-18” | Spring | Pink/blue color-changing blooms |
| Nancy Garrison Passionflower | 15-20’ | 2-3′ | Spring through summer | White & purple flowers, passion fruit |
| Blue Ice Amsonia | 12-16″ | 18-24″ | Early Spring | Lavender blue flowers, yellow fall foliage |
| Double Winky Blue & White Columbine | 24-30” | 12-18” | Spring to early summer | Ruffled two-tone flowers |
| Blue Lace Delphinium | 5-6’ | 18-24” | Early Summer, Reblooms until Fall | Elegant blue flower spikes |
| Victoria Blue Forget-Me-Nots | 6-8″ | 6-8″ | Early Spring | Blue & white flowers, compact |
| Grape Hyacinth | 6” | 6″ | Spring | Blue-purple bell flowers |
| Nikko Blue Hydrangea | 4-6’ | 4-6’ | Summer | Classic blue or pink blooms |
| Variegated Iris (Iris Variegata) | 24” | 18-24” | Summer, for several weeks | Lavender flowers, striped foliage |
| Cambridge Blue Lobelia | 4-6″ | 4-6″ | Spring to frost | Light blue flowers |
| Twinkle Toes Lungwort | 12-14” | 16-18” | Mid to Late Spring | Periwinkle blue flowers |
| Corsican Violet Viola | 6-8″ | 8”-12″ | Spring to fall | Blue-purple flowers |
| Texas Bluebonnet | 8-24″ | 12″ | Spring | Vibrant blue wildflowers |
| Porcelain Blue Corydalis | 10-12” | 12” | Spring and Summer | Unique blue trumpet flowers |
| Sky Blue Aster | 2-3′ | 18-24″ | Late August to October | Sweet blue daisy-like flowers |
| Blue Glitter Sea Holly | 30-36” | 18-24” | Blooms in summer for 6 weeks | Spiny blue flowers |
| Chocolate Chip Bugleweed | 3-6″ | 6-8″ | Mid to late spring | Blue flowers, chocolate foliage |
| Blue Lily of the Nile | 1-2’ | 1-2’ | Year-round in hot zones | Lavender-blue trumpet blooms |
| Azure Rush Geranium | 15-18″ | 18-24” | Late Spring through Frost | Blue-lavender flowers |
| Tall Blue Planet Bluemink | 24-30″ | 9-12” | Summer to frost | Clusters of blue flowers |
Wrapping Up
Adding these unique plants with blue flowers to your garden is sure to infuse it with a charm that’s 100% unique to you!
Before reading this, I bet you didn’t imagine there’d be so many true blue flower options for your garden! But, I hope you now see there’s so many options–no matter how much sun or space you have available!
While lists of beautiful plants are a great inspiration,there’s so much more involved in designing beautiful garden beds.So, if you want to take a deep dive into creating yourvery own secret garden, check out myDesign Your 4-Season Garden Course. I’ll take you step-by-step through my framework for creating the 4-season garden plan of your dreams.
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Design Your 4-Season Garden Course
Use my design framework toconfidently design a beautiful, colorful gardenthat looks great in EVERY season.FINALLY understand how plants work togetherand the framework that makes it easy as ABC.
COST: $159/mo for 3 months or
$397 when you pay in full (Save $80!)
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Top Flowers for your Garden (Arranged by Color)
Lists of my favorite flowers arranged into every color of the rainbow, including: red, orange, yellow, green, blue, pink, purple, white and black.
26 Sunny Yellow Flowers for Home Gardens (with Bloom Times)
Dozens of sunny yellow flowers to add to your garden, including photos, key features and where to buy them!
Dozens of perfect purple flowers to add to your garden, including photos, key features and where to buy them!
25 Vibrant Orange Flowers for Home Gardens (with Bloom Times)
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Shopmy Amazon storefrontfor my essential gardening books & tool recommendations!
