Ailsa Craig Onion

Allium cepa | SKU: 0392
2 Reviews
$3.75 to $27.14
  • Long-day onion
  • Bulbs grow to 2 pounds
  • Globe-shaped, solid bulbs
  • Not for storage
  • 100 days from transplant
  • ±7,500 seeds/oz

$3.75 to $27.14

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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

2 reviews

  • 4 stars
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  • 1 star
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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.

Delicious and easy to grow.


It's mid February and we still have some Alisa Craigs that have stored well. Delicious onion that grows to a nice large size.