Using Old Seed Packets: Viability and Testing

Are 2-Year-Old Seeds Still Good?

Seed packets are dated for regulatory compliance, not because seeds expire instantly. Viability depends on species and storage conditions.

General Longevity

• Short-lived (1–2 years): onion, parsley, parsnip, corn, bean.
• Medium (3–5 years): tomato, pepper, squash, cucumber, lettuce.
• Long-lived (5+ years): melon, radish, cabbage, kale, many flowers.

Testing Germination

1. Place 10 seeds on a damp paper towel; fold and seal in a plastic bag.
2. Keep at 70°F. Check daily for 7–14 days.
3. Count sprouted seeds. ≥70% = good; 50–70% = sow thicker; <50% = replace.

Storage Tips

Keep seeds cool, dry, and dark. A sealed jar in the refrigerator with a desiccant packet extends life significantly.

For packets dated 2003 (assuming current year ~2005), most vegetable seeds would be past prime, but many flowers might still germinate. Test before committing garden space.