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Patterson Onion (F1 Hybrid, 104 Days)

10 reviews

Long day

Longest storage onion we offer. An outstanding variety that replaces the much-loved Copra. Extremely high yielding 3-3 ½ inch uniform bulbs. Copper-colored skins with firm flesh. One of our employees was still cooking with them in early May. Save some space in your garden to grow this one.                                  

150 seeds  

Please note that germination rates for alliums (onions/shallots/chives/leeks) decline rapidly. We strongly encourage you to purchase new seed each growing season.


Allium cepa

Germination: 5-10 days

Germination Temperature: Optimum soil temperatures 60-75ºF. 

Seed Sowing Depth: 1/4" deep

Sowing Indoors: Start 8-10 weeks before the last frost with soil temperatures 60-75ºF. Sow in flats 1/4” deep, 1/4” apart. Transplant seedlings out mid/late spring, 2-6” apart. Liquid fertilize seedlings every 7-10 days. Seedlings size should be about a pencil-thick at transplanting time.

Sowing OutdoorsEarly to mid-spring when the soil temperature reaches at least 55 ºF. Sow 1-3 seeds per inch, thin to 2-6” apart. The larger the bulb size the more space. 

How much does a packet plant: 15-30 foot single row  

Harvest- Stop watering a week before harvesting. Pull out when necks soften and start to fall over. Cure them in the sun for a few days then finish drying them out of direct sunlight, in a warm area, and in a single layer so air can circulate around them until the neck is dry. Store in a cool dark place with 35-40ºF temperatures and 65-70% humidity.

Tips- Needs fertile, well-drained soil. Amend with compost or apply organic granular fertilizer. Adequate water is very important for optimum growth, 1" per week. 


Customer Reviews

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Customer Reviews
4.6 Based on 10 Reviews
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Donald H.
United States United States
I recommend this product
patterson onion

Had poor germination/30%/ with your seed. Same seed from other vendors germinated normally. Still prefer Copra as a long storage onion

Marie J.
United States
I recommend this product
Patterson onions

Excellent germination. Great keeper. I still have some from last year’s harvest!

Joyce G.
United States
I recommend this product
Patterson onions

I planted them last year and am still using the last few now. They have kept very well and are nice and firm yet. I had no problem getting them to germinate or grow nice onions. I bought they again to plant this year. I will be starting them this afternoon.

Don't be afraid

I was very apprehensive. I planted Copra onions for years. I found the Pattersons to be bigger and to my surprise, sweeter and just generally better onions. We'll see how they keep over the winter. If they will keep like a Copra, it's game on.

Sherillee B.
United States
Patterson Onion

very weak plants. In all my years of starting onions under lights inhouse, I've never had such an issue.