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Ailsa Craig Sweet Onion

Photos are representative and may not match your specific variety.

Ailsa Craig Sweet Onion

Allium

Allium cepa 'Ailsa Craig'

  • Full sun
  • Zones 5–10
  • 110 days to maturity
  • Vegetables
  • 4" spacing
  • High water
  • pH 6–7
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  • Overview

    A legendary exhibition onion variety from Scotland that can grow to enormous sizes while maintaining sweet, mild flavor. This pale yellow globe onion is famous for winning competitions and producing bulbs that can weigh 2-3 pounds when grown with proper care. Despite its impressive size, Ailsa Craig maintains excellent eating quality and stores reasonably well.

  • Planting

    Start seeds indoors 10-12 weeks before last frost. Transplant when soil can be worked and plants are pencil-thick.

  • Growing

    Sun: full. Water: high. Soil pH: 6–7. Space plants 4" apart. Germination: 7-14.

  • Pests & diseases

    Common pests: Onion maggot, thrips, aphids, cutworms. Common diseases: Downy mildew, purple blotch, neck rot, pink root.