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Kelsae Sweet Giant Onion Seeds

2 review(s) | Add your review

Kelsae Sweet Giant Onions

SKU: ON28-25

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Country Of Origin: United Kingdom

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Availability: Out of stock

Expected availability date: November 19, 2025

Price: $4.00

Your price: $3.50

Overview
Planting instructions
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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%

Test Date: 10/2025

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 Depth

Soil Temp. for Germination

Days to Germination

Sunlight Requirements

Planting Time

1/4 to 1/2"

50 F to 90 F

10 to 14 days

Full Sun

Spring

USDA Hardiness Zone

Seed Spacing

Row Spacing

Space After Thinning

Days 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.

2 review(s)

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From: Samuel | Date: 3/18/2025 7:13 PM

Not even close to onions

I'm not sure these are even in the same family as onions but like the other review here they are clearly dicot. Definitely a mixup that can cause you to lose some trust in a company.

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From: James | Date: 2/9/2025 5:57 PM

Disappointed-not onions

These are clearly not onions. Seems the seed got mixed up somehow. The seedlings growing are dicots, not monocots like onions are.

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Reimer seeds has over 5,000 quality vegetable, flower, and herb seeds for the home gardener and market growers. We do not sell any Genetically Modified seeds. This year we reduced our prices on many items, added new items, and have added additional bulk items by the ounce and pounds! Take time to review our impressive Online Seed Catalog. Sorry, we do not have a printed catalog to mail you. Plan your garden, and then order your varieties for this upcoming season. Please check back often, as we add new items regularly. If you don’t see an item you want you can always email us and we’ll see if we can bring it into stock!