White Grano Onion Seeds (Allium cepa) – 500+ Heirloom Non-GMO Seeds by Isla’s Garden Seeds, Short Day Variety, Ideal for Planting, Perfect for Home Gardens, Great Gardening Gift
White Grano Onion Seeds (Allium cepa) – 500+ Heirloom Non-GMO Seeds by Isla’s Garden Seeds, Short Day Variety, Ideal for Planting, Perfect for Home Gardens, Great Gardening Gift
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Isla's Garden Seeds

White Grano Onion Seeds (Allium cepa) – 500+ Heirloom Non-GMO Seeds by Isla’s Garden Seeds, Short Day Variety, Ideal for Planting, Perfect for Home Gardens, Great Gardening Gift

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Key item features

  • Key Features

    • Plant Type: Biennial grown as an annual
    • Sun Needs: Full sun
    • Water Needs: Moderate; consistent watering is essential
    • Planting Depth: ¼ inch
    • Plant Spacing: 4-6 inches
    • Plant Height: 12-18 inches
    • Days to Maturity: 100-120 days
    • USDA Zones: 6-10 (optimal for short-day growth)
  • Detailed Planting Instructions
    Sow White Grano Onion seeds directly outdoors in well-draining soil as soon as the ground can be worked in early spring or fall in warmer climates. Plant the seeds ¼ inch deep and space them 4-6 inches apart, ensuring rows are spaced about 12-18 inches apart. Onions thrive in full sun and need consistent watering for proper bulb development. Apply mulch to retain soil moisture and reduce weed competition. Thin seedlings as needed to promote healthy growth.
  • More Detailed Information
    White Grano Onions are known for their adaptability to warmer climates, thanks to their short-day growing requirements. This variety matures faster than many other types, producing firm, medium-sized bulbs that store well for several weeks when kept in cool, dry conditions. Onions prefer fertile soil enriched with organic matter, so adding compost before planting can boost growth. Regular weeding and avoiding waterlogged conditions will help prevent issues like bulb rot.
  • Trust in Isla's Garden Seed Co.
    Isla's Garden Seed Co. takes pride in providing only the highest quality heirloom, non-GMO seeds to help gardeners achieve success. Our seeds are meticulously selected and tested for high germination rates to ensure robust growth and reliable harvests. We are committed to supporting gardeners with expert guidance and sustainable practices that make gardening rewarding and enjoyable. Choose Isla’s Garden Seed Co. for seeds that you can trust to deliver quality and performance season after season.
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