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, The Great Big Greenhouse
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Allium cowanii reaches 16 to 24 inches tall, featuring 2 inch loose clusters of glistening white florets with ivory-green anthers. Blooming in late spring, it thrives in full sun and well-drained soil, showing drought tolerance and strong resistance to deer and rabbits while attracting pollinators. Its airy blooms create a delicate yet striking presence in borders, rock gardens, and mixed plantings.
Description | Price | |||
---|---|---|---|---|
Bin Display Box of 250 Bulbs, Size 5+ | $38.50 | |||
Get Notified When Back In StockComplete this form and we'll notify you when SKU BIN6411060 is restocked. | ||||
10 Retail Packages of 25 Bulbs, Size 5+ | $46.75 | |||
Get Notified When Back In StockComplete this form and we'll notify you when SKU RET6031080 is restocked. | ||||
Bulk Tray of 2500 Bulbs, Size 5+ | $275.00 | |||
Get Notified When Back In StockComplete this form and we'll notify you when SKU BUL35124505 is restocked. |
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.
Height | 16 Inches |
Spread | 2-4 Inches |
Spacing | 6-8 Inches |
Hardiness Zone | 4-7 |
Color |
White |
Check back soon for additional details.