Onion (Allium cepa 'Copra') in the Onions Database

General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun
Water Preferences: Mesic
Plant Height: 18-24 Inches
Plant Spread: 6-8 Inches
Flowers: Inconspicuous
Flower Time: Summer
Underground structures: Bulb
Uses: Vegetable
Edible Parts: Fruit
Dynamic Accumulator: K (Potassium)
Ca (Calcium)
Na (Sodium)
Resistances: Deer Resistant
Rabbit Resistant
Humidity tolerant
Pollinators: Bees
Various insects
Containers: Not suitable for containers

Showing Average Sizes Harvested

Photo gallery:
Location: My PlaceDate: August 23, 2013Showing Average Sizes Harvested
By TBGDN
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Location: My PlaceDate: August 23, 2013Three Onions: Two Pounds & 3.7 Ounces
By TBGDN
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Location: My PlaceDate: August 24, 2013Copra Circumference 11+ Inches
By TBGDN
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Location: My GardensDate: October 9, 2016Surprising Size & Weight At 1# 2.8 Oz.
By TBGDN
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Comments:
Posted by TBGDN (Indiana - Zone 5a) on Oct 9, 2016 4:19 PM

This year was good locally for onion crops. Copra is the mainstay in my onion patch, being an all-around good onion for cooking, soups, stews & grilling. What's more, it keeps through the winter when cured and stored properly. I've kept them successfully over winter through March into April. This year produced large, firm onions, with the largest weighing 1 pound 2.8 ounces. I might add they add a nice zingy flavor to grilled burgers.

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Posted by TBGDN (Indiana - Zone 5a) on Aug 24, 2013 11:29 AM

This is my fourth year raising these onions, and there are no regrets nor disappointments. I recall a note I had made in September 2009 in my garden notes. Here is part of what I had written then: This is my first year raising Copra onions, and they are about what I had expected from reading about them. They are medium sized, usually no more than 3 to 4 inches in diameter. I grew them for winter storage -not size. A quote from the supplier reads, "This is the best storage onion available. Its extra-hard medium-size bulbs will provide you onions for cooking until you have to plant again. The blocky round shape and thin necks allow the onions to dry quickly and they still have the highest sugar content of any storage type." Unquote.

Four years later I am very satisfied with the overall quality of this onion. We usually have them in storage until about April 1st. Just as any other plant in the gardens, it can be affected by weather conditions. This means (to me) that problems can arise, including fungal diseases, moles, flooding, and high wind damage. 2013 has been a good year for all the onions locally.

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Plant Events from our members
Weedwhacker On September 28, 2014 Harvested
Weedwhacker On June 4, 2014 Transplanted
Weedwhacker On May 12, 2014 Potted up
Weedwhacker On February 23, 2014 Seeds sown
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