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Patterson Onion (F1 Hybrid ,104 days)


Long day

This is a replacement for the variety Copra which many gardeners loved and grew year after year but it is no longer available for us to offer.  Patterson hits the same marks of a great onion like Copra, except it is a bit larger and more uniform with copper colored skin and the same ability to store extremely well.    

150 seeds



Germination: 5-10 days

Germination Temperature: Optimum soil temperatures 65-85 degrees F. Cooler soil temperatures increase germination time.

Seed Sowing Depth: ¼” deep

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

Starting Indoors:  8-10 weeks before last frost. Sow in flats/cells/pots ¼ ” deep, ¼-½ ”  apart. Provide 65-75 degrees F soil temperatures. Transplant seedlings out mid/late spring, 2-6” apart. Fertilize the seedlings every 7-10 days with a liquid or water soluble fertilizer (diluted to ¼ of suggested measurement).

How much does a packet plant: 15-20 foot single row  

Harvest: Stop watering a week before harvesting. Pull out when tops fall over and skin develops. Cure them by drying them until the neck is dry, out of direct sunlight, in a warm area, and in single layer so air can circulate around them.

Tips: Plant into fertile soil with lots of organic matter and adequate water, 1” per week for optimum growth.

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.