Out of Stock

Ailsa Craig Onion

Ailsa Craig Onion | Certified Organic by Ecocert Canada
Allium cepa | Biennial | Open Pollinated | Heirloom

Spanish variety that is large, sweet and firm. 5-6” bulb size. Stores up to one month. Named for a perfectly round, solid rock island off the coast of Scotland.

Planting tip: Start indoors 10-12 weeks before the transplanting date. Trim seedling to 1” when it reaches 5” to increase thickness.

Harvesting tip: When tops dry up and fall over harvest for storage variety. Cure for 3-5 days in the fields. Alternatively, cure in the greenhouse at 23-26°C and 80% humidity.

Storage tip: Cool and dry slowly to elongate the dormancy period. Onion can also store in a root cellar at 0-1°C and 65-70% humidity.

Want to be notified when this product is back in stock?

This product is currently out of stock and unavailable.


Seed depth : 1/8-1/4’”

Plant spacing : 3-4” Medium Sized

Row spacing : 18-30”

Sun tolerance level : Full Sun

Days to germination : 4-10 Days

Days to maturity : 105 Days

Germination temperature : 12-32°C, optimally 20-25°C


Additional information

Onion Size


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.