The onion harvest time varies, but generally, onions are ready to harvest around 3 to 4 months after planting, depending on whether they are grown from seeds or sets.
Here's a breakdown:
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From Seed: Onions grown from seed typically mature in 90-100 days, which equates to approximately 4 months.
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From Sets: Onions grown from sets (small, partially grown onions) mature faster, usually in about 80 days, or just under 3 months.
Therefore, the onion harvest typically occurs within a window of 3 to 4 months after planting, depending on the initial planting material.