ZonePlant
Copra onion

vegetable variety

Copra

Onion · Allium cepa

USDA hardiness range

Zones
3a–6b
Days to harvest
90 to 130
Sun
Full
Water
Moderate
Lifespan
biennial grown as annual

At a glance

Pungent, dense, dependable storage onion; small to medium yellow globes. Cooking, soups, sauteing. Stores 8-10 months, the longest-keeping yellow onion for the home garden.

Growing Copra

Detailed guidance for this section is being prepared. Check back soon.

Flavor, texture, and use

Detailed guidance for this section is being prepared. Check back soon.

Growing notes

Detailed guidance for this section is being prepared. Check back soon.

Copra by zone

Zone-specific suitability, frost timing, and adjacent-zone notes.

Other onion varieties

4 sibling cultivars profiled on ZonePlant.

Frequently asked questions

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What zones does the Copra onion grow in?

Copra grows in USDA zones 3a through 6b.

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How does Copra compare to other onion varieties?

Copra is one of 5 onion varieties profiled on ZonePlant. See the full onion variety table for side-by-side comparison.

Image: "Zwiebeln auf Antigua", by CHK46, via Wikimedia Commons, licensed under CC-BY Source.

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