How Long Can I Store Seeds For?
This depends upon the type of seed and the conditions of storage. Generally speaking, a cool dry place with consistent temperature is the best way to maintain longevity of any seed. A pamphlet released by the Oregon State Extension service also provides these general guidelines:
- Short-lived seeds (1–2 years): corn, onion, parsley, parsnip, pepper
- Intermediate seeds (3–4 years): asparagus, bean, broccoli, carrot, celery, leek, pea, spinach
- Long-lived seeds (4–5 years): beet, chard, cabbage family (Brussels sprouts, cauliflower), turnip, radish, cucumber, eggplant, lettuce, musk- melon, pumpkin–squash group, tomato, watermelon