High Country Gardens
True Blue Allium
Best low-maintenance choice for gardeners wanting vibrant, pest-resistant spring blooms.
Discover the True Blue Allium, a stunning ornamental onion native to Siberia. This variety, scientifically known as Allium azureum, produces abundant, flax-blue flowers measuring 1 1/2 inches round. Reaching a mature height of 18 inches, these bulbs are easy to grow and readily re-seed, ensuring a vibrant display year after year. Ideal for fall planting, they thrive in compost-enriched, well-drained soil and tolerate partial shade. Blooming from May to June, they are a beautiful addition to rock gardens, borders, and make excellent cut flowers, attracting butterflies to your garden.
$8.24
Owner Satisfaction
4.6
/ 5
Category Rank
726
/ 3183
#726 in Plant & Flower Bulbs
Price vs Category Average
-65%
Below average
Flower Size
112
/ /" round
Who it's for
- Gardeners seeking a rare, vibrant blue focal point
- Water-wise landscapers prioritizing low-maintenance, drought-tolerant perennials
- Homeowners needing natural protection against deer and voles
Who should skip it
- Designers who dislike unsightly, yellowing basal foliage
- Gardeners wanting a long-lasting, multi-season floral display
- Budget-conscious buyers planning large-scale landscape installations
Performance breakdown
Pollinator Appeal
Bright blue blooms act as a magnet for local butterfly populations.
Hardiness Range
Exceptional versatility across zones four through ten ensures widespread garden success.
Pest Resistance
Natural deterrent properties keep deer and rabbits away from your display.
Ease of Cultivation
Self-seeding nature makes these bulbs a low-maintenance perennial garden staple.
Floral Versatility
Sturdy stems and unique color make these ideal for fresh arrangements.
Environmental Adaptability
Thrives in various light conditions from full sun to partial shade.
Key Specs
Flower Size
1 1/2" round
Mature Height
18 inches
Planting Depth
2-4 inches
Bulb Spacing
16 bulbs per sq. ft.
Bulb Size
5 cm
Hardiness Zones
4-10
Bloom Time
May-June
USDA Hardiness Zones
Zone 4, Zone 5, Zone 6, Zone 7, Zone 8, Zone 9, Zone 10
Features
- Vibrant flax-blue, 1 1/2" round flowers
- Attracts butterflies to your garden
- Deer and rabbit resistant
- Easy to grow and self-seeds
- Tolerates partial shade conditions
- Perfect for cut flower arrangements
- Hardy in zones 4-10
What customers say
The True Blue Allium is celebrated for its outstanding quality and distinctive design. Gardeners consistently report reliable performance, with bulbs showing high germination and producing strong, healthy growth that reappears annually. Its captivating true blue color is a standout feature, offering a rare and vibrant shade that truly impresses. This dependable beauty and visual appeal make it a valuable choice for those seeking unique garden color and reliable results season after season.
Know before you buy
These bulbs should be planted in the fall. This allows them to establish their root systems before the ground freezes and ensures they are ready to bloom the following spring.
Yes, True Blue Allium is a reliable perennial in zones 4-10. They are known for being easy to grow and will readily re-seed themselves, helping to maintain a vibrant display in your garden year after year.
Absolutely. While they thrive in full sun, True Blue Allium is tolerant of partial shade conditions, making them a versatile choice for various spots in your landscape.
No, these are considered deer and rabbit resistant. Their taste and texture generally discourage local wildlife from browsing on them.
For best results, plant the bulbs at a depth of 2 to 4 inches. Ensure the soil is well-drained and enriched with compost to provide the nutrients they need to thrive.
Yes, their unique flax-blue color and 1 1/2-inch round blooms make them an excellent choice for cut flower arrangements. They add a striking, architectural element to indoor displays.
Still have a question?
Ask Hayley anything about this product before you decide.
Ready to buy?
$8