Temperature Control

• Cool Storage: Seeds should be stored in a cool place, ideally between 32°F (0°C) and 41°F (5°C). Heat can shorten the lifespan of seeds, so avoid warm areas.
• Freezing (for Long-term Storage): Some seeds can be stored in a freezer if properly packaged. Freezing helps preserve seeds for several years, but it must be done carefully to avoid moisture buildup, which could damage the seeds.

2. Humidity Control

• Low Humidity: Seeds should be stored in dry conditions. Excess moisture can lead to mold growth or premature germination. Ideal humidity levels are around 20–40%.
• Desiccants: Using silica gel packets or other desiccants inside the storage container can help absorb moisture and maintain low humidity.

3. Proper Packaging

• Airtight Containers: Store seeds in airtight containers to protect them from humidity, pests, and contaminants. Glass jars, vacuum-sealed bags, or Mylar bags with oxygen absorbers are excellent options.
• Labeling: Clearly label the containers with seed type, variety, and the date of storage. This helps track freshness and ensure proper use.
• Protection from Light: Store seeds in dark places, as light can reduce seed viability. Use opaque containers or keep them in a dark cupboard or drawer.

4. Pest Control

• Pest-Proof Containers: Ensure the storage containers are sealed tightly to prevent rodents, insects, and other pests from accessing the seeds.
• Inspecting: Periodically check stored seeds for signs of pest activity or mold.

5. Air Circulation (for Short-Term Storage)

• Ventilation: For seeds stored in a non-air-tight environment, such as envelopes or cloth bags, make sure there is enough airflow to avoid moisture buildup.

6. Avoiding Cross-contamination

• Keep Different Varieties Separate: Storing different seed varieties in separate containers reduces the risk of cross-contamination, which can affect seed purity.

7. Consider the Seed's Needs

• Species-Specific Requirements: Some seeds require special care, such as cold stratification or scarification, before they can be stored for long periods. Be sure to research specific seed needs.

By following these precautions, you can ensure that your seeds remain viable for planting, even after months or years of storage.