Azureum Allium Flower Bulbs
Azureum Allium Flower Bulbs
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- TOP SIZE PREMIUM FLOWER BULBS
- 70+ YEARS OF QUALITY EXPERIENCE
- RATED 4.9 OUT OF 5 BY OUR CUSTOMERS
Add a rare splash of true blue to your late spring garden with Azureum Allium, one of the only allium varieties to feature naturally blue flowers. Each rounded bloom is composed of dense, star-shaped florets in soft periwinkle to sky blue tones, held atop upright green stems that rise above low-growing foliage. These striking globes create a cool and calming effect in the garden, especially when paired with silver, white, or lavender companions.
Compact and easy to grow, Azureum is ideal for borders, rock gardens, and container plantings. It attracts pollinators, resists deer, and thrives with minimal care. The blooms also make charming additions to floral arrangements, both fresh and dried. With its unique color and tidy growth habit, Azureum Allium brings a refreshing twist to traditional spring plantings.
Flower Features
Flower Features
Flower Color:
- Blue
Sunlight Requirements:
- Full Sun
- Partial Shade
Bulb Size: 5/+
Mature Height: 18-24"
Blooming Season: Late Spring
Suitable Zones: 3-8
Plant Spacing: 2-4"
Planting Depth: 2-3"
When & How To Plant
When & How To Plant
To plant allium bulbs effectively, timing and site selection are key. Aim to plant allium bulbs in the fall, ideally between late September and mid-November, once soil temperatures have dropped below 60°F (15°C). Choose a location that receives full sun and has well-drained soil, as alliums dislike excess moisture. Prepare the soil by loosening it to a depth of 8–12 inches and mix in compost or well-rotted manure to enrich it.
Plant allium bulbs 4–6 inches deep (depending on variety) and space them 6–8 inches apart, with the pointed end facing up. After planting, water thoroughly to help settle the soil and begin the rooting process. Apply a 2–3-inch layer of mulch to help retain moisture and insulate the bulbs through winter. As spring approaches and temperatures begin to rise, remove the mulch to allow new growth to emerge.
For those interested in enjoying alliums as cut flowers, harvest them just as the flower heads begin to open for the best vase life. Cut stems cleanly with sharp pruners and immediately place them in cool water. To prevent bacterial growth, strip off any foliage that would sit below the waterline. Display arrangements away from direct heat or sunlight, and change the water every two days. With proper care, alliums provide long-lasting, dramatic beauty both in the garden and in fresh floral displays.
Shipping Schedule
Shipping Schedule
Fall shipping starts around September (weather permitting).




Customer Testimonials
These bulbs are fabulous! Brilliant colours, sturdy stalks and the plant first season is full and leafy. Sometimes the first sprouting, the plants are a little scrawny, but these bulbs are well-sized with many flower stalks. The orange and yellows are vibrant, and the frilly edges are something I had not seen before.
Dyan L.Idaho
It at be pre-mature giving this a five star review so early. I have never purchased this before so I have high hopes. I’m going off my last experience purchasing here before, timely shipment, and healthy looking plant.
JennChesapeake
This fall, I purchased a ridiculous amount of bulbs in hopes for an amazing spring presentation. Every year, I only order from Nagel Gladiolus Bulbs and it doesn’t disappoint. I also order for my mother’s yard as her Mother’s Day present. All the bulbs were healthy and nice.
JennChesapeake
These were the first to pop and bloom for me this year. Filled the yard with yellow sunshine and just pure JOY! They lasted just until the last two days of May this year and I honestly can't wait to order more for next year!
MercedesMN
I am a huge Nagel Gladiolus Bulbs fan. I’m quite embarrassed by the total transaction dollar amount I’ve spent here. When you find a good supplier, you stick with them. These bulbs are healthy, large, and ready to plant. I can wait to see what spring brings.
JennChesapeake
I ordered these along with some other bearded iris, and every single rhizome was healthy and had tiny green shoots when they arrived. I've never received bulbs or rhizomes from other companies in such great condition. As soon as I planted them they started growing, and are still growing now into winter, even after snow and frost.
Jackie
This was part of the "Waves of Purple Bearded Iris Collection." They arrived as expected and in great condition. I am very much looking forward to seeing them grow and bloom next spring. I also had an issue with my order, but Holland and Bulbs exceeded my expectations with their custom service and commitment to their customers.
lschirer
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