Ailsa Craig Onion

Allium cepa

A jumbo, fast growing onion!

If you’re in the market for a massive long day sweet onion, this heavyweight champ will knock your socks off. David Murray, gardener for the Marquis of Ailsa, introduced this stunner in 1887 at Culzean Castle in Scotland. Sow early in fertile soil for quick-growing, pale yellow onions that can reach up to 6 lbs! Globe shaped. Enjoy them fresh or cooked for their mild, sweet flavor. Harvest as needed; this is not a storage onion. 

from $3.50

UnitPriceQuantityAvailability
300 Seeds $3.50 In Stock
750 Seeds $6.50 In Stock
1/2 Ounce $21.95 In Stock
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Start indoors early, 12 weeks before last frost. Sow seeds about 1 inch apart. Onions are very susceptible to damping off, so do not over water and keep the good air flow where you are growing your seedlings. Once onions are 3 inches high and about 1/4 inch thick, they can be brought outdoors to harden off. After hardening off, transplant seedlings at 4 inch spacing, or in groups of 3 at 12 inch spacing. Onions require rich, loamy, weed free soil and plenty of water. Weed onion patch often. Pulling large weeds can dislodge onions. Once the tops have started to yellow and flopped over, pull onions and let cure for 1-2 weeks in a warm, dark place. Cut the tops off and store in a cold, dry, dark place until use.

Days to Germination 7 to 14 days
Days to Maturity 110 days
Planting Depth ½ inch
Spacing in Row 4 inches
Spacing Between Rows 12 inches
Height at Maturity 18 inches
Width at Maturity 6"
Sun Preference Full to Partial Sun

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