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Kelsae Sweet Giant Onion Seeds

Guarantee To Grow
World Record
Best Seller
Heirloom Variety
Home Garden Favorite
Farmer’s Market Selection
Market Growers Selection
Long Day Onion
110 days. Allium cepa. Open Pollinated. Kelsae Sweet Giant Onion. The plant produces excellent yields of giant 15 lb yellow onions. The Kelsae Sweet Giant Onion holds the Guinness World Record for the Largest Onion in the World at nearly 15 lb 5.5 oz and 33 inches in diameter. It has a unique, mild sweet flavor. A variety developed in the 1940s by Alfred Breed at Mertoun Gardens near St Boswells. Keeps well into the following year. Impress your neighbors and try growing a World Record Giant Onion. A long day variety suitable for Northern regions. An excellent choice for home gardens, Farmer’s Markets, and specialty market growers. An heirloom variety from Scotland.
SKU: ON28-25
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Country Of Origin: United Kingdom United Kingdom
Availability: Out of stock
$4.00
Your price: $3.50
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National Seed Shortage – Limited Availability 2025
Non-GMO Variety
Open Pollinated Variety
Non Treated Seeds
Giant Onion
Giant Veggies

110 days. Allium cepa. Open Pollinated. Kelsae Sweet Giant Onion. The plant produces excellent yields of giant 15 lb yellow onions. The Kelsae Sweet Giant Onion holds the Guinness World Record for the Largest Onion in the World at nearly 15 lb 5.5 oz and 33 inches in diameter. It has a unique, mild sweet flavor. A variety developed in the 1940s by Alfred Breed at Mertoun Gardens near St Boswells. Keeps well into the following year. Impress your neighbors and try growing a World Record Giant Onion. A long day variety suitable for Northern regions. An excellent choice for home gardens, Farmer’s Markets, and specialty market growers. An heirloom variety from Scotland.

 

Lot No: 102822

Germination: 85%

 

Seeds Per Pound: 144,000

 

Plant Height: 4 to 33” 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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