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Do vegetable seeds expire

Updated: 10/6/2023
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13y ago

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It depends on the type of seeds and how they were stored. If your seeds were kept in a cool, dry place, there's a good chance they're still viable, but expect a lower germination rate - exactly how low depends on the species. Seed corn is best used the current year (after that germination is greatly reduced), but tomato seeds can last for more than four years if stored well. Seeds for some perennials seem to last forever while some such as delphinium must be sown shortly after harvest. Annuals such as cosmos, marigolds, petunia and stock can last for several years. Parsley has to be sown right away.

The germination rate continues to decrease over time until eventually you're better off buying new seed so you're not wasting garden space, energy and time. To test your seeds, space several out on a few layers of moist paper towels, roll up so that the seeds don't touch, and enclose the bundle in plastic wrap so it doesn't dry out. Place in a warm bright location (65 to 70 degrees is fine) but away from direct sun. Check the seeds every couple of days. If they haven't germinated - or only a few have sprouted - in a couple of weeks, chances are they're no good. If you prefer just throwing caution to the winds and not testing the seeds, be sure to sow more heavily to make up for lower germination rates.

Vegetable seed viability

beans - 3 years

beets - 2 years

carrots - 3 years

corn - 2 years

cucumbers - 5 years

lettuce - 3 years

peas - 3 years

peppers - 2 years

pumpkins - 4 years

radishes - 5 years

spinach - 5 years

tomato - 4 years

watermelon - 4 years

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13y ago
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12y ago

After a few years they will get pretty stale, but they won't expire

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