If you’re looking to add some charm to your garden, blue perennials can be an excellent choice. These plants not only offer stunning blue flowers, but they also come back every year, providing lasting beauty.

Here, we’ll explore 20 blue perennials that bloom beautifully year after year and can transform your garden into a tranquil, colorful haven.

1. Delphinium (Delphinium spp.)

Delphiniums are known for their striking spires of bright blue flowers that stand tall in any garden. These perennials are perfect for adding height and color to the backdrop of your garden.

They thrive in cooler climates and full sunlight, making them an excellent choice for gardeners in the right zones.

2. Blue Lobelia (Lobelia erinus)

With its trailing habit and small, vibrant blue flowers, blue lobelia is ideal for hanging baskets, window boxes, or as a ground cover. Its compact growth habit makes it perfect for both small and large gardens.

3. Virginia Bluebell (Mertensia virginica)

The Virginia Bluebell features clusters of bell-shaped flowers in shades of blue and purple. This shade-loving perennial is perfect for woodland gardens, offering a burst of early spring color before the trees fully leaf out.

4. Forget-Me-Not (Myosotis sylvatica)

Forget-me-nots are cherished for their tiny, delicate blue flowers. These perennials thrive in moist, shaded areas and are an excellent choice for ground cover, borders, or along garden paths.

5. Creeping Jenny (Lysimachia nummularia)

Creeping Jenny may not boast tall flowers, but its small, bluish-green leaves and trailing habit make it a perfect addition to any garden, especially in containers or hanging baskets.

6. Salvia (Salvia nemorosa)

Salvia, or woodland sage, is a robust plant that produces spikes of blue flowers, attracting pollinators like bees and hummingbirds. It thrives in full sun and well-drained soil, offering years of vibrant color.

7. Bachelor’s Button (Centaurea cyanus)

This classic blue flower is known for its ruffled petals and cheery appearance. Bachelor’s buttons are a great addition to any garden, growing well in both sunny and partially shaded spots.

8. Bluebell (Hyacinthoides non-scripta)

Bluebells are famous for their nodding, bell-shaped flowers and sweet fragrance. They prefer shaded, woodland areas and will naturalize over time, coming back year after year.

9. Lupine (Lupinus spp.)

Lupines are known for their tall, spiky flower clusters, which come in a range of blues. These perennials thrive in well-drained soil and full sun, offering dramatic color and attracting pollinators like bees.

10. Hydrangea (Hydrangea macrophylla)

Hydrangeas can have a stunning blue hue, especially when grown in acidic soil. These large, bushy shrubs are perfect for adding a touch of elegance to any garden.

11. Columbine (Aquilegia caerulea)

Columbine plants have delicate, nodding flowers that come in shades of blue, often mixed with white or purple. These plants thrive in part-shade and add a whimsical touch to gardens with their unique flower shapes.

12. Echinops (Echinops ritro)

Echinops, also known as globe thistle, is a unique perennial with spherical blue flower heads. This hardy plant adds texture and color to the garden and thrives in full sun.

13. Aubrieta (Aubrieta deltoidea)

Aubrieta is an evergreen perennial with small, vibrant blue flowers. Perfect for rock gardens, borders, or as ground cover, it blooms in early spring, providing color after the long winter months.

14. Caryopteris (Caryopteris clandonensis)

Caryopteris, or bluebeard, is a late-blooming shrub that produces masses of small, blue flowers. It is perfect for a sunny garden and offers both fragrance and color late in the summer season.

15. Catmint (Nepeta faassenii)

Catmint is a drought-tolerant perennial with aromatic, silvery foliage and spikes of blue to lavender flowers. It thrives in full sun and is perfect for attracting pollinators to the garden.

16. Jacob’s Ladder (Polemonium caeruleum)

This perennial is a perfect plant for shady spots in the garden, where it will bloom with clusters of blue, bell-shaped flowers. It is ideal for woodland gardens, naturalizing well over time.

17. Campanula (Campanula spp.)

Campanulas are diverse, with many varieties producing blue flowers. They range from low-growing ground covers to taller, more upright varieties. Campanulas are perfect for adding color and texture to flower beds.

18. Fescue (Festuca glauca)

Fescue grasses offer a soft, blue-green hue and can be used in combination with other perennials for texture and contrast. While not known for flowering, their beautiful foliage adds visual interest to gardens.

19. Giant Bluebell (Scilla peruviana)

A relative of the common bluebell, the giant bluebell produces clusters of blue flowers on tall stalks, perfect for adding height to flower beds or mixed borders. It blooms in late spring and early summer.

20. Chionodoxa (Chionodoxa forbesii)

Chionodoxa, or glory-of-the-snow, is an early-blooming perennial that produces star-shaped blue flowers. These perennials are perfect for growing in the front of garden beds, providing an early splash of blue in the spring.

Why Choose Blue Perennials?

Blue perennials offer several advantages for your garden. They provide a peaceful, calming atmosphere, with shades that evoke tranquility.

Additionally, many blue perennials are low-maintenance, returning year after year to brighten your space. They also attract beneficial pollinators, including bees, butterflies, and hummingbirds, which are essential for maintaining a healthy ecosystem in your garden.

In addition to their beauty, blue perennials can complement a variety of other plants. Whether you want to create a monochromatic blue garden or mix them with other colorful flowers, these perennials are versatile and can be used in various garden designs.

Conclusion

Blue perennials are an excellent choice for gardeners who want beautiful blooms that return year after year. From the delicate Forget-Me-Not to the bold and tall Delphinium, there’s a blue perennial for every garden style.

Whether you’re planting in containers, flower beds, or woodland gardens, these blue beauties will enhance your outdoor space and bring joy for years to come.