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28 Plants With Blue Flowers That Add a Pop of Color

Selina Haverford
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There’s something magical about blue flowers that just makes any garden pop! Whether it’s the calming vibe or the striking contrast against lush greens, these beauties are a must-have in any outdoor space.

After years of experimenting with various plants, I’ve gathered a fabulous list of 28 plants with blue flowers that will truly stun your garden. From vibrant delphiniums to delicate forget-me-nots, there’s a perfect blue bloom for every corner of your yard! Let’s dive right into this sea of stunning blues!

1. Bluebell

Bluebells are those charming little flowers that seem to carpet woodlands in spring. Their delicate, drooping shape and vibrant blue color make them a favorite for gardeners and nature lovers alike. When they bloom, they create a stunning sea of blue that’s hard to miss! Plus, they’re super easy to grow and generally thrive in shady spots, making them perfect for those tricky areas in your garden.

These flowers are not just pretty; they have an enchanting scent that can fill the air when you walk through a bluebell wood. Just a heads-up, they can be a bit invasive, so be mindful of where you plant them!

  • Hyacinthoides non-scripta: The classic English bluebell, known for its stunning blue hue and lovely fragrance.
  • Spanish Bluebell (Hyacinthoides hispanica): A slightly taller version, which blooms a bit later and can come in shades of blue and pink.

2. Hydrangea

Hydrangeas are show-stoppers in any garden! Known for their big, round flower clusters, they can shift colors based on soil pH, but the blue varieties are simply mesmerizing. These plants thrive in partial shade, making them ideal for those shady corners of your yard.

When they bloom in summer, they can create a lush backdrop that adds depth to your landscape. Plus, they make gorgeous cut flowers, so don’t forget to bring some indoors for a splash of color!

  • Hydrangea macrophylla ‘Endless Summer’: Known for its ability to bloom repeatedly throughout the summer, offering that vibrant blue color.
  • Hydrangea serrata ‘Bluebird’: A compact variety that produces clusters of beautiful blue flowers, perfect for smaller gardens.

3. Delphinium

Delphiniums are like the graceful dancers of the garden world! With their tall spikes of blue flowers, they can reach impressive heights and add drama to your garden beds. They’re usually the star of the show in summer, attracting butterflies and bees.

While they prefer full sun and rich soil, they do need some staking to keep them upright, especially in windy areas. But trust me, the effort is worth it for that heavenly blue display!

  • Delphinium elatum ‘Blue Bird’: A lovely variety featuring rich blue flowers with a white center.
  • Delphinium ‘Magic Fountains’: A shorter variety that’s perfect for containers and smaller spaces, with a mix of blues and whites.

4. Lobelia

Lobelia is like a charming little friend that brings brightness to hanging baskets and borders. These plants produce cascades of tiny blue flowers, creating a stunning effect when planted en masse. They thrive in cooler temperatures, making them perfect for spring and early summer gardens.

They love moist conditions, so make sure to keep them well-watered for the best blooms. Plus, they can attract pollinators, which is always a bonus for any garden!

  • Lobelia erinus ‘Blue Carpet’: A trailing variety that works wonders in containers and hanging baskets.
  • Lobelia ‘Sky Blue’: This one has striking sky-blue flowers that add a refreshing touch to any garden.

5. Aster

Asters are like the stars of the late summer garden, blooming in a range of colors, but the blue varieties are truly special. They’re known for their daisy-like flowers that attract butterflies and other pollinators. These perennials are easy to grow and thrive in full sun, making them a great addition to your garden beds.

They’re also quite hardy, so they’ll bring blooms year after year with little fuss. Whether you want to create a colorful border or fill in gaps, asters are a fantastic choice!

  • Aster novae-angliae ‘Alma Potschke’: This variety produces bright pink flowers with a hint of blue, making it a vibrant addition.
  • Aster amellus ‘Blue Ice’: A lovely blue option that blooms late in the season, perfect for extending your garden’s color.

6. Forget-Me-Not

Forget-Me-Nots are those sweet, tiny flowers that seem to whisper “remember me.” Their delicate blue hues are perfect for edging and ground cover. They bloom in spring and can spread quite easily, creating a charming and soft look in your garden.

These little beauties thrive in both sun and part shade, and they often pop up in unexpected places, adding a touch of whimsy to your landscape. Plus, they’re great for attracting bees!

  • Myosotis sylvatica: The classic variety, known for its bright blue flowers and a heartwarming charm.
  • Myosotis ‘Blue Ball’: A compact version, perfect for containers or smaller garden spaces.

7. Bachelor’s Button

Bachelor’s Buttons, or cornflowers, bring a rustic charm with their frilly, blue blooms. They’re super easy to grow from seeds and can thrive in poor soil conditions, making them a great choice for new gardeners or wildflower gardens.

These flowers bloom in summer and can add a lovely pop of color to your garden while attracting beneficial insects. They also make great cut flowers for your home!

  • Centaurea cyanus ‘Blue Boy’: A classic variety with bright, true blue flowers that stand out in any garden.
  • Centaurea cyanus ‘Black Ball’: A unique variety that offers a striking contrast with dark centers surrounded by blue petals.

8. Blue Salvia

Blue Salvia is a must-have for any garden! Known for its tall spikes of blue flowers, it’s a magnet for pollinators, especially bees and hummingbirds. These resilient plants thrive in full sun and well-drained soil, making them easy to care for.

They bloom from summer to fall, providing long-lasting color and interest in your garden. They also make fantastic cut flowers, so definitely consider bringing some indoors!

  • Salvia nemorosa ‘Caradonna’: Features dark stems and rich blue flowers, perfect for borders.
  • Salvia ‘Mystic Spires’: A compact variety that produces continuous blooms, ideal for containers or smaller gardens.

9. Bellflower

Bellflowers bring a delightful charm to any garden with their bell-shaped blooms. They come in various shades of blue and can be found in both upright and creeping forms, making them versatile for garden design.

These plants thrive in a range of soil types and can handle partial shade, making them perfect for filling in those tricky spots in your garden. They bloom in late spring to summer, creating a lovely show of color!

  • Campanula persicifolia: Known as the peach-leaved bellflower, it features tall spikes of beautiful blue flowers.
  • Campanula portenschlagiana: A creeping variety perfect for ground cover, with lovely clusters of blue blooms.

10. Periwinkle

Periwinkle, also known as vinca, is a little ground-hugging plant that thrives in almost any condition. Its lovely blue flowers and glossy green leaves make it a popular choice for gardens and landscapes.

These plants are great for filling in shady spots and are even used as a weed suppressor! They bloom in spring and can keep your garden looking fresh throughout the season.

  • Vinca minor ‘Bowles’s Variety’: A popular variety known for its lovely blue flowers and vigorous growth.
  • Vinca major ‘Variegata’: Features beautiful variegated leaves and striking blue flowers, adding unique flair to your garden.

11. Gentian

Gentians are a bit of a hidden gem! With their deep blue flowers, they create a stunning contrast in any garden. They thrive in cool, moist conditions and are often found in mountain areas, making them perfect for rock gardens.

These flowers bloom in late summer to fall, offering a delightful surprise just when you think the garden is winding down. They can be a bit tricky to grow, but the payoff is so worth it!

  • Gentiana acaulis: Known for its bright blue, star-shaped flowers, perfect for alpine gardens.
  • Gentiana scabra: Features larger blooms and is slightly easier to grow, making it a good choice for beginners.

12. Blue Fescue

Blue Fescue is a grass with a twist! This ornamental grass features fine, blue-green foliage that adds texture and interest to your garden. While it doesn’t produce traditional flowers, its seed heads can create a lovely blue hue when they mature.

It’s drought-tolerant and low-maintenance, making it perfect for rock gardens, borders, or even in containers. Plus, it adds a lovely contrast against colorful blooms!

  • Festuca glauca ‘Elijah Blue’: A standout variety known for its striking blue color and compact growth.
  • Festuca glauca ‘Blue Dune’: This one features a silver-blue hue and is great for adding movement to your garden with its graceful foliage.

13. Iris

Iris flowers are like the royalty of the garden with their elegant blooms and stunning variety of colors. The blue irises are particularly beloved, showcasing their intricate petals and bright hues. They thrive in sunny spots and can tolerate a variety of soil types, making them quite adaptable.

Blooming in late spring to early summer, they attract butterflies and add a regal touch to any garden bed. Plus, they come back year after year, so they’re a great investment!

  • Iris germanica: The classic bearded iris, known for its large, showy blooms in various shades of blue.
  • Iris ensata: Also known as Japanese iris, it features beautiful blue flowers and thrives in wetter conditions.

14. Morning Glory

Morning Glories are the cheerful climbers of the garden, with their vibrant blue flowers opening up in the morning sun. These fast-growing plants are perfect for trellises, fences, or any structure you want to cover with a burst of color.

They’re easy to grow from seeds, and once they start blooming, they’ll keep giving you those stunning flowers all summer long. Just remember to plant them in a sunny spot for the best results!

  • Ipomoea purpurea ‘Heavenly Blue’: A classic variety with stunning, large blue flowers that are sure to impress.
  • Ipomoea tricolor ‘Scarlet O’Hara’: Although it’s named for its red flowers, it also produces lovely blue blooms that add variety to your garden.

15. Campanula

Campanula, or bellflowers, are incredibly versatile, offering both upright and creeping varieties. These cheerful blue blooms are perfect for adding color to borders, rock gardens, and even hanging baskets. They’re quite hardy and thrive in well-drained soil with plenty of sunlight.

These plants typically bloom in summer, providing a lovely display of color that can last for several weeks. Plus, they’re great at attracting pollinators, which is always a win!

  • Campanula poscharskyana: Known as Serbian bellflower, this variety is a vigorous spreader with lovely blue flowers.
  • Campanula carpatica: A compact, perennial variety that produces cup-shaped blue flowers, perfect for containers.

16. Scilla

Scilla, or squill, is another spring delight with its lovely blue flowers that bloom in clusters. They thrive in well-drained soil and can handle both sun and partial shade, making them a great choice for naturalizing in gardens.

These little beauties often bring a touch of whimsy with their star-shaped blooms, and they’re perfect for rock gardens or as ground cover. Plus, they’re quite low-maintenance!

  • Scilla siberica: The classic Siberian squill, known for its brilliant blue flowers and early spring blooms.
  • Scilla bifolia: Features lovely two-flowered stems and is great for naturalizing in gardens.

17. Blue Flax

Blue Flax is like a gentle breeze in your garden with its delicate blue flowers and slender stems. These plants thrive in sunny spots and well-drained soil, making them perfect for wildflower gardens or naturalistic landscapes.

They bloom in late spring to early summer, creating a lovely display that can sway gently with the wind. Plus, they’re drought-tolerant, which is always a bonus for busy gardeners!

  • Linum perenne: The classic blue flax, known for its vibrant blue flowers that bloom profusely.
  • Linum usitatissimum: This variety is grown for its seeds as well, making it a dual-purpose addition to your garden.

18. Chia

Chia plants may be famous for their seeds, but their beautiful blue flowers are a hidden treasure! These annuals are easy to grow and thrive in full sun, making them perfect for adding color to veggie gardens or flowerbeds.

They bloom from summer to fall, attracting bees and butterflies, which is always a delightful sight. Plus, once their blooms fade, the seeds can be harvested for use!

  • Salvia hispanica: The most common chia variety, known for both its seeds and beautiful blue flowers.
  • Salvia columbariae: A native variety that produces lovely blue blooms and is great for pollinator gardens.

19. Plumbago

Plumbago is a stunning plant with clusters of blue flowers that can brighten up any garden. Known for its trailing growth habit, it’s perfect for hanging baskets, containers, or as a ground cover. They thrive in full sun and can handle dry conditions, making them quite low-maintenance!

These beauties bloom from summer through fall, providing plenty of color when many other plants start to fade.

  • Plumbago auriculata ‘Royal Cape’: Known for its bright blue flowers and lush foliage, perfect for tropical gardens.
  • Plumbago auriculata ‘Imperial Blue’: A compact variety that produces deep blue flowers, great for containers or smaller spaces.

20. Blue Star

Blue Star is a charming perennial that brings star-shaped blue flowers to your garden. They’re hardy and thrive in well-drained soil with plenty of sunlight, making them perfect for borders or wildflower gardens.

These plants bloom in spring and early summer, offering a lovely blue display that complements other garden colors beautifully.

  • Amsonia tabernaemontana: The classic blue star that features bright blue flowers and stunning fall foliage.
  • Amsonia hubrichtii: Known for its delicate blue flowers and striking yellow foliage in the fall.

21. Brunnera

Brunnera, often known as false forget-me-nots, are shade-loving perennials that produce clusters of lovely blue flowers in spring. These plants thrive in moist, rich soil, making them a great choice for woodland gardens or shaded areas.

Their heart-shaped leaves are also quite attractive, providing interest even when they’re not in bloom. Plus, they’re great for attracting pollinators!

  • Brunnera macrophylla ‘Jack Frost’: A stunning variety with silvery leaves and beautiful blue flowers.
  • Brunnera macrophylla ‘Looking Glass’: Features reflective leaves that provide brilliant contrast to its blue flowers.

22. Ceanothus

Ceanothus, or California lilac, is a fantastic plant for adding vibrant blue flowers and attracting wildlife to your garden. These shrubs thrive in sunny, well-drained soil and are often used in xeriscaping due to their drought tolerance.

Blooming in spring, they create a stunning show when covered in clusters of blue blooms, and they’re quite easy to care for.

  • Ceanothus thrysiflorus ‘Yankee Point’: A popular variety with rich blue flowers and sprawling growth, great for ground cover.
  • Ceanothus ‘Dark Star’: Known for its dense growth habit and vibrant blue flowers, perfect for hedges.

23. Agapanthus

Agapanthus, or African lily, produces striking blue flowers on tall stems that are perfect for adding height to your garden beds. They thrive in sunny locations and well-drained soil, making them a great addition to borders or containers.

These plants bloom in summer and are excellent for attracting bees and butterflies, making them a lovely addition to any pollinator garden!

  • Agapanthus africanus: The classic blue variety known for its stunning flower clusters and lush foliage.
  • Agapanthus ‘Blue Moon’: This variety features deep blue flowers with a compact habit, perfect for smaller gardens.

24. Bluebell Creeper

The Bluebell Creeper is a charming plant that produces lovely blue flowers and works wonderfully for trellises and walls. It thrives in well-drained soil and can handle partial shade, making it a versatile option for climbing or cascading in your garden.

These plants bloom profusely in the spring and summer, providing a delightful display that can be quite eye-catching.

  • Wahlenbergia gloriosa: Known for its striking, deep blue flowers and vigorous growth.
  • Wahlenbergia marginata: Features a slightly different growth habit, making it perfect for hanging baskets or containers.

25. Blue Sage

Blue Sage is a stunning plant that showcases blue flowers on tall spikes, perfect for sunny borders or wildflower gardens. These drought-tolerant plants are hardy and can thrive in various soil types, adding to their popularity.

They bloom from summer to fall, attracting butterflies and hummingbirds, which is always a delightful sight in your garden!

  • Salvia azurea: Known for its tall, upright growth and vibrant blue flowers, perfect for naturalizing.
  • Salvia farinacea: A compact variety that produces beautiful blue blooms, ideal for containers or smaller spaces.

26. Cornflower

Cornflowers, or Bachelor’s Buttons, are classic garden favorites with their bright blue flowers. These hardy annuals are easy to grow and can thrive in poor soil, making them perfect for wildflower gardens or casual arrangements.

They bloom from late spring to summer, providing a cheerful pop of color and attracting pollinators to your garden!

  • Centaurea cyanus ‘Blue Boy’: The classic variety known for its brilliant blue color and frilly petals.
  • Centaurea cyanus ‘Black Ball’: A unique variety that features a mix of colors but includes lovely blue blooms.

27. Jacob’s Ladder

Jacob’s Ladder is a lovely perennial that produces clusters of blue flowers on tall stems. These plants thrive in well-drained soil and prefer partial shade, making them perfect for woodland gardens or shady borders.

Blooming in late spring, they add a bright touch to your garden and are a great choice for attracting bees and butterflies!

  • Polemonium caeruleum: The classic Jacob’s Ladder with lovely blue flowers and delicate foliage.
  • Polemonium reptans ‘Blue Pearl’: A compact variety that produces beautiful clusters of blue blooms, great for smaller gardens.

28. Blue Butterfly Bush

The Blue Butterfly Bush is a fantastic addition to any garden, featuring long spikes of blue flowers that attract butterflies and bees. These plants thrive in full sun and well-drained soil, making them a breeze to care for.

Blooming from summer to fall, they provide a stunning display of color, and their fragrant flowers make them perfect for attracting pollinators to your garden!

  • Buddleja davidii ‘Royal Blue’: Known for its vibrant blue flowers and compact growth, perfect for smaller spaces.
  • Buddleja ‘Blue Chip’: A dwarf variety that produces lovely blue blooms, ideal for containers or smaller gardens.

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