Allium caeruleum (Ornamental Onion)

Award-winner Allium caeruleum is a stunning bulbous perennial boasting globe-shaped clusters, 1 in. wide (3 cm), packed with dozens of small star-shaped bright blue flowers. They sit atop stiff stems above the foliage of narrow green leaves, often withering by flowering time. Prized for its true blue color, Allium caeruleum provides interesting ornamental value in the garden from late spring to early summer.

• Recipient of the prestigious Award of Garden Merit by the Royal Horticultural Society.
• Growing up to 12-24 in. tall (30-60 cm), Allium caeruleum naturalizes easily and will come back year after year! Since the leaves wither before the flowers emerge, plant your Allium caeruleum with other mid-sized plants to hide the faded foliage.
• Easily grown in rich, sandy to gritty, dry to medium moisture, well-drained soils in full sun. This Allium is drought tolerant.
• Known for attracting bees, butterflies, ​moths, and other pollinators, but deer ignore it.
• Stunning in beds, borders, and cottage gardens. Spectacular in large sweeping drifts. Plant in groups (at least 10 to 15 bulbs) for the best visual impact. Excellent as cut flowers for both fresh and dried arrangements!
• Mixes beautifully with other late spring flowering bulbs and creates stunning combinations with pink or white delphiniums, peonies, or irises.
• To be planted in fall.

Hundreds of Allium species exist, but only a few have made a name for themselves as garden plants. The ornamental onions distinguish themselves by their remarkable diversity in color, inflorescence, and flowering height. Many species bloom in early summer – just after the spring-flowering period and just before the exuberant full bloom of summer. Certain small species are just perfect for a rock garden, and several lend themselves to naturalizing. All species can be used in the border.