If you’re dreaming of a garden filled with bold, sky-high blooms, delphiniums are the drama queens you need. These tall, elegant flowers bring serious color—especially in striking shades of blue.
Whether you’re going for cottagecore vibes or a more structured flower bed, delphiniums add height, texture, and that wow factor every garden deserves. From deep indigos to powdery pastels, here are 24 stunning blue delphinium varieties to plant this season. Trust us—your garden is about to glow.
1. Pacific Giant
When it comes to size, bigger is often better. The Pacific Giant delphinium is no exception. Known for its towering height, it boasts stunning blue spikes that can reach up to six feet tall. These plants make a bold statement in any garden setting.
The Pacific Giant is not just about looks; it’s also surprisingly resilient. Ideal for the back of borders, this variety demands attention and respect from onlookers. Plant them with some support to prevent wind damage, and they’ll reward you with gorgeous blooms.
2. Blue Butterfly
Not every garden can host a towering plant. For those with limited space, the Blue Butterfly delphinium offers a charming alternative. This variety is compact, yet its blooms are no less spectacular. The petals resemble the delicate wings of a butterfly.
Blue Butterfly delphiniums are perfect for container gardens or the front of mixed borders. They’re sure to draw admiration without overshadowing their neighbors. Water them regularly to keep them happy, and enjoy their graceful presence.
3. Summer Skies
Some plants make you feel like you’re on a holiday. Summer Skies delphinium, with its sky-blue flowers, transforms any garden into a sunny retreat. This variety thrives in well-drained soil. Despite the name, it blooms beautifully throughout summer.
Summer Skies are a favorite among gardeners for their reliable performance. Pair them with white or pastel flowers for a serene look. Make sure they get plenty of sunlight, and they’ll flourish with grace. Perfect for borders and cutting gardens alike.
4. Magic Fountain
You might think magic doesn’t exist, but the Magic Fountain delphinium proves otherwise. With its cascading blue flowers, this variety enchants all who see it. It’s not just about appearances; Magic Fountain is compact and sturdy.
Ideal for smaller gardens, it requires less staking than its taller cousins. This makes it a practical choice for busy gardeners. Plant in groups for a magical transformation. Ensure they have a sunny spot, and watch them cast their spell throughout the summer months.
5. King Arthur
In any garden, a touch of royalty is always welcome. Meet the King Arthur delphinium, known for its regal blue spikes that stand tall and proud. This variety exudes elegance and commands attention. It’s a hardy plant, capable of withstanding less-than-ideal conditions with grace.
Perfect for formal gardens or those looking to add a touch of sophistication. Plant alongside silver foliage for an even more majestic appearance. Ensure they’re well-watered, and this king will reign supreme in your garden.
6. Aurora Blue
Sometimes, the softest touches leave the biggest impression. Aurora Blue delphinium features gentle lavender-blue flowers that add a serene touch to any garden. It’s perfect for cottage gardens, blending seamlessly with other delicate blooms.
Despite its soft appearance, this variety is robust and easy to grow. Aurora Blue is a favorite for garden enthusiasts seeking a peaceful retreat. Pair with whites and pinks for a harmonious look. Give them a sheltered spot and enjoy their calming presence.
7. Cliveden Beauty
Elegance and beauty often go hand in hand. Cliveden Beauty delphinium is a perfect example, with its striking light blue flowers that capture attention effortlessly. It’s a taller variety, making it a standout choice for garden borders. Despite its graceful appearance, it’s tough and reliable.
Cliveden Beauty thrives in full sun and well-drained soil. Pair with other pastel-colored plants for a cohesive look. Make sure they’re protected from strong winds, and they’ll grace your garden for years.
8. Dark Blue Bee
Adding a touch of contrast can elevate any design. The Dark Blue Bee delphinium does this beautifully with its deep blue petals and contrasting white centers. It’s a medium-height variety, perfect for adding depth and interest.
This delphinium is a magnet for pollinators, making it a valuable addition to any eco-friendly garden. Plant alongside other blue or white flowers for a harmonious effect. Keep them well-watered, and enjoy watching bees and butterflies flock to their blooms.
9. Atlantis
The ocean’s mysteries have always intrigued us. Atlantis delphinium captures a bit of that wonder with its striking ocean blue flowers. It’s a tall variety that brings a touch of the sea to your garden.
Ideal for creating vertical interest, Atlantis pairs well with a variety of other flowers. It’s hardy and thrives in full sun. Plant in well-drained soil, and it will sail through the summer months with ease. Let this delphinium be the anchor of your garden’s design.
10. Blue Jay
Birds bring life to any garden. The Blue Jay delphinium, with its bright blue flowers, echoes this vibrancy. It’s a medium-sized plant, fitting perfectly into mixed borders. Known for its clear blue hue, it stands out without overwhelming its companions.
Blue Jay is easy to grow and maintain, making it a great choice for novice gardeners. Provide it with plenty of sunlight, and it will thrive alongside other colorful blooms. Enjoy the lively atmosphere it brings to your garden.
11. Sapphire
Jewels have always captivated us. The Sapphire delphinium, with its pure blue flowers, is no exception. This variety shines in any garden setting, offering a touch of elegance and flair. It’s a compact plant, making it suitable for smaller spaces.
Despite its size, Sapphire is a strong performer, blooming consistently throughout the season. Pair with silver foliage for a sophisticated look. Ensure it’s planted in a sunny, well-drained spot, and this jewel will sparkle for you all summer long.
12. Cobalt Dreams
Vivid dreams often inspire us. Cobalt Dreams delphinium, with its striking cobalt blue flowers, brings that inspiration to life. This tall variety is perfect for creating dramatic vertical displays. It’s a robust plant, able to withstand various weather conditions.
Cobalt Dreams is ideal for adding bold color to garden borders or as a focal point. Plant in full sun and well-drained soil for best results. Let this delphinium be a dream come true in your garden.
13. Blue Lace
Lace adds a touch of elegance to any outfit. Blue Lace delphinium mimics this with its delicate blue blooms. This medium-height variety is ideal for those seeking a refined garden look. It’s not just pretty; Blue Lace is also a reliable performer.
Plant in full sun and well-drained soil. Pair with whites or pastels for a cohesive and delicate appearance. Regular watering will ensure these lacy blooms grace your garden throughout the season.
14. Blue Lace Sky
The sky is a canvas of dreams. Blue Lace Sky delphinium, with its airy blue flowers, adds a touch of whimsy to any garden. This medium-height variety is perfect for creating a dreamy landscape. It’s a reliable bloomer, providing beauty and grace throughout the season.
Plant in full sun and pair with other soft-colored flowers for a cohesive look. Regular watering will ensure these airy blooms brighten your garden all summer long.
15. Blue Horizon
The horizon always promises something new. Blue Horizon delphinium, with its rich blue flowers, brings that promise to your garden. This tall variety is ideal for creating focal points in garden designs.
It’s a strong grower, thriving in full sun and well-drained soil. Blue Horizon pairs beautifully with other bold flowers for a striking display. Provide support to prevent wind damage, and enjoy the breathtaking blooms as they rise above your garden’s horizon.
16. Sky Blue
There’s something about blue skies that lifts the spirit. Sky Blue delphinium, with its light blue flowers, brings that uplifting feeling to your garden. This medium-sized variety is perfect for adding a serene touch to borders.
It’s a reliable performer, blooming consistently throughout the season. Plant in full sun and well-drained soil, and pair with whites or pastels for a calming effect. Let these sky-blue blooms brighten your garden and your day.
17. Blue Moon
Once in a blue moon, something extraordinary happens. Blue Moon delphinium, with its pale blue flowers, captures that magic. This medium-height variety is perfect for creating a mystical garden scene.
It’s a reliable bloomer, thriving in full sun and well-drained soil. Pair with other moonlight-inspired plants for a cohesive look. Let these ethereal blooms enchant your garden, even at night.
18. Blue Bird
Birds have always inspired joy. Blue Bird delphinium, with its bright blue flowers, brings that joy to your garden. This tall variety is perfect for adding vibrancy and life. It’s a strong grower, thriving in full sun and well-drained soil.
Pair with other brightly colored flowers for a lively display. Provide support to prevent wind damage, and these cheerful blooms will bring happiness to your garden all season long.
19. Blue Angel
Angels are often seen as messengers of peace. Blue Angel delphinium, with its angelic blue flowers, brings that peace to your garden. This medium-height variety is perfect for creating a serene atmosphere.
It’s a reliable bloomer, thriving in full sun and well-drained soil. Pair with other soft-colored plants for a harmonious look. Let these angelic blooms grace your garden with tranquility and beauty.
20. Blue Ice
Ice can be both beautiful and serene. Blue Ice delphinium, with its icy blue flowers, brings that serene beauty to your garden. This medium-height variety is perfect for creating a cool, calming space.
It’s a reliable performer, thriving in full sun and well-drained soil. Pair with whites or silvers for a cohesive, chill look. Let these icy blooms cool down your garden and your mind.
21. Blue Elf
Elves are known for their charm and playfulness. Blue Elf delphinium, with its small blue flowers, brings that whimsical charm to your garden. This compact variety is perfect for adding enchantment to smaller spaces.
It’s a strong performer, thriving in full sun and well-drained soil. Pair with other fairy-tale-inspired plants for a magical look. Let these charming blooms add a touch of fantasy to your garden.
22. Blue Lagoon
Lagoon imagery often invokes tranquility. Blue Lagoon delphinium, with its serene blue flowers, brings that tranquility to your garden. This medium-height variety is perfect for creating a peaceful retreat.
It’s a reliable bloomer, thriving in full sun and well-drained soil. Pair with tropical-inspired plants for a cohesive theme. Let these serene blooms transport you to your very own garden paradise.
23. Blue Symphony
A symphony of colors can create harmony in any setting. Blue Symphony delphinium, with its harmonious blue flowers, brings that harmony to your garden. This medium-height variety is perfect for creating a unified landscape.
It’s a reliable bloomer, thriving in full sun and well-drained soil. Pair with other harmonious-colored plants for a cohesive design. Let these symphonic blooms orchestrate beauty in your garden.
24. Delphinium ‘Pagan Purples’
This is a delightful variety with tall spikes of purplish-blue flowers. Pagan purple blooms create a dramatic statement, especially when planted en masse. Their rich color provides a stunning contrast against the greenery, making them a must-have for avid gardeners.
Ensure they receive ample sunlight and protection from strong winds. Regular deadheading will prolong their flowering period, offering a continuous display of color throughout the summer.