I have worked with A.D.R. Bulbs for almost 5 years now, and my company has sourced bulbs with them for longer than that. Communication is great - from ordering, to deliveries, to follow-ups on final product. I love the quality of the product as well as the service. We plant nearly 100,000 bulbs and A.D.R. keeps the whole process easy for us!

Louise Licata , Bland Landscaping Co.

Allium Giant 'Mount Everest'

Ornamental Onion

Allium 'Mount Everest' reaches 3 to 4 feet tall, featuring striking 6-inch pure-white flower globes that bloom from late spring into summer. Thriving in full sun and well-drained soil, it is drought-tolerant, deer-resistant, and attracts pollinators. Its sturdy stems ensure lasting ornamental appeal. Ideal for borders and cottage gardens, it pairs well with peonies, irises, and delphiniums. 'Mount Everest' is a hybrid of Allium stipitatum and Allium hollandicum.

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When should I plant Allium Giant 'Mount Everest'?

Growing and Maintenance Tips for Allium Giant 'Mount Everest'

Timing: Plant in fall before the ground freezes to ensure proper root development. Ideal soil temperature for planting is 60°F or colder.
Location: Choose a sunny, well-drained spot—poor drainage can cause bulb rot.
Depth & Spacing: Bury bulbs two to three times their height and space them six to twelve inches apart for optimal growth.
Soil: Maintain a pH of 6 to 7 and enrich with organic matter for better drainage.
Watering: Keep soil moist but not soggy during initial growth; once established, alliums are drought-tolerant.
Foliage Management: Leaves yellow after blooming—plant among perennials to disguise fading foliage.
Deadheading: Remove spent flowers to prevent self-seeding unless you want naturalized clusters.
Fertilization: Apply a balanced fertilizer in early spring to support strong blooms.
Pest & Disease Resistance: Alliums are deer and rabbit resistant but avoid planting in areas with excessive moisture to prevent fungal issues.
Crop Rotation: Change planting locations yearly to prevent soil-borne diseases.