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Ailsa Craig Exhibition Onion Seeds

Guarantee To Grow
Cold Tolerant
Long Day Onion
Ailsa Craig Exhibition Onions
SKU: ON1-250
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Country Of Origin: United Kingdom United Kingdom
Availability: In stock
$3.00
Your price: $2.50
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Giant Onion
Heirloom Variety
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Non Treated Seeds
Non-GMO Variety

95 days. Allium cepa. Open Pollinated. Ailsa Craig Exhibition Onion. The plant produces excellent yields of huge 2 to 6 lb sweet onions. This Spanish type onion has a unique mildly sweet flavor. Perfect for soups, sandwiches, salads, and cooking. Impress your neighbors and try growing a World Record size onion. Earlier than other Spanish types. Tolerates cool weather well. Suitable for Northern regions. Similar to Kelsae Sweet Giant Onion. Excellent choice for home gardens. This variety is named after Ailsa, a small round island off the coast of Scotland that is nearly solid rock. An 1887 heirloom from South Ayrshire, Scotland. A long day variety.

 

Lot No: 102801

Germination: 93%

Test Date: 09/2025

 

Seeds Per Pound: 144,000

 

Plant Height: 4 to 8” Bulbs

 

Planting Season: Spring

 

Sunlight Requirement: Full Sun

 

Planting Method: Direct Sow/Indoor Sow

Onions Allium cepa

 
Seed DepthSoil Temp. for GerminationDays to GerminationSunlight RequirementsPlanting Time
1/4 to 1/2"50 F to 90 F 10 to 14 daysFull Sun Spring
USDA Hardiness ZoneSeed SpacingRow SpacingSpace After ThinningDays to Harvest
N/A 3 to 4"12 - 18" 4 to 6"90 - 120 days
Onion Planting Information:

Onion seeds should be planted indoors 6 to 8 weeks before the ground can be worked. You can also plant seeds directly in the garden. Spring planting should occur as soon as the soil can be worked. Keep free from weeds. You need long sunny days to grow large onions. Shallots are very close to garlic and are very easy to grow. Plants can grow 8 to 12" tall.

Soil Requirements:

Requires fertile soil in a well-drained location in the garden. Apply mulch and grass clippings, or straw, around the base of the plant.

Water Requirements:

Keep seedlings and transplants consistently moist, but not waterlogged. Water well during dry and hot spells.

Fertilizer Requirements:

Use Slow Release (6 Month) Fertilizer when transplanting outdoors. Apply Miracle-Gro Liquid Fertilizer every two weeks.

Harvest Tips:

You can harvest onions for their green stems (scallions) at any time. Cut the green stems with garden scissors when tops are 4 - 8" tall. For bulb products, let the tops dry up by themselves before digging them up. Spread bulbs on the ground for 3 to 5 days to cure.

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Guest | 9/22/2013 4:49 AM
I grow them in southern California and they do just fine. I plant in November and March for a staggered harvest
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Guest | 12/26/2008 9:24 PM
Very good onion (big and sweet) for the North! Living in North Dakota by the Canadian border, this long day onion grows great. Any one living in states North of Ohio and "in Canada" should be growing this one.  Jim Dufty, Bottineau, ND.
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