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.
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Columbus is a Double Early Tulip with large, peony-shaped blooms in raspberry pink, edged with creamy white for a striking contrast. Its sturdy stems reach 16 to 20 inches, supporting lush, layered petals that create a full, rounded appearance. The flowers can grow up to 5 inches across, opening wide in sunlight. Blooming in early to mid-spring, it thrives in full sun and well-drained soil, making it ideal for borders, containers, and cut arrangements.
Description | Price | |||
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Bin Display Box of 125 Bulbs, Size 11/12 | $75.63 | |||
Get Notified When Back In StockComplete this form and we'll notify you when SKU BIN6112025 is restocked. | ||||
Bulk Tray of 700 Bulbs, Size 11/12 | $346.50 | |||
Get Notified When Back In StockComplete this form and we'll notify you when SKU BUL14066812 is restocked. |
Planting: Plant in fall once soil temperatures dip below 55°F. Set bulbs 6–8 inches deep, pointed end up. Double early tulips appreciate a sheltered site to protect their full blooms from spring winds and rain.
Spacing: Space bulbs 4–6 inches apart. For a lush display, plant in dense clusters of 10 or more—this enhances the layered effect of their peony-like flowers.
Light: Full sun is best. They will tolerate light shade but flower most abundantly with 6+ hours of direct sunlight daily.
Soil: Choose a well-drained, neutral to slightly acidic soil (pH 6–7). Avoid heavy or soggy conditions that may lead to rot—especially important for these densely petaled varieties.
Watering: Water after planting to settle the soil. In spring, water during dry periods, but ensure soil drains freely—excess moisture can damage flower heads.
Temperature & Dormancy: Requires 12–16 weeks of cold (below 50°F) for proper rooting and bud formation.
Fertilization: Apply a balanced bulb fertilizer at planting time and again as foliage emerges in early spring to support strong stems and full blooms.
Pests: Generally trouble-free. Use mulch or mesh to discourage squirrels. Ensure good drainage to avoid bulb rot. Deer will eat the flower buds or emerging foliage, especially in early spring. Protect with fencing or repellents in high-pressure areas.
Disease: To prevent Botrytis (Tulip Fire), plant only firm, healthy bulbs in sunny, airy sites. Avoid overhead watering, and remove any affected foliage promptly—do not compost. Rotate plantings annually, and if Botrytis has appeared, avoid that site for at least three years.
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