Ailsa Craig Onion

Allium cepa | SKU: 0392
1 Reviews
$3.25 to $22.50
  • Long-day onion
  • Bulbs grow to 2 pounds
  • Globe-shaped, solid bulbs
  • Not for storage
  • 100 days from transplant
  • ±7,500 seeds/oz

$3.25 to $22.50

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Item Details

Named after Ailsa, a small round island off the coast of Scotland that is solid rock. Introduced in 1887 by David Murray, gardener for the Marquis of Ailsa. Ailsa Craig is globe-shaped and solid. Large straw-colored onions with small necks average 2 pounds. Best for fresh use, not extended storage. Long-day type. 100 days from transplant. ±7,500 seeds/oz.

Learn to Grow Ailsa Craig Onion

Start Indoors: 4-6 weeks before transplanting

Germination: 4-10 Days

Plant Outdoors: 4-6” Apart

Light: Full Sun

Instructions - Sow seeds indoors in flats ¼" deep and space 1" in all directions. Transplant outdoors as soon as soil can be worked in spring. Keep onions well weeded with shallow cultivation.

Ratings & Reviews

1 review

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Good flavor


This is my backup onion when I can't get my other seeds. It's a good all-around onion. I don't like fresh onions but do love them carmelized for burgers or added to other dishes. Like other onions, it requires loose soil. I generally plant my seeds a few weeks earlier than recommended because I like larger plants to plant outside. It makes it so much easier and I haven't noticed a difference in results at the end of the season.