Recommendations for seed storage

Seeds are living organisms, and each species has its own "lifespan" during which it develops its full germination potential. To ensure optimal germination, proper storage determines the success of your sowing.

Improper storage reduces the germination rate of seeds, resulting in a lower germination rate. Fungi can spread and prematurely age seeds. Moisture, warmth, and oxygen stimulate the metabolism and consume valuable reserve nutrients that your seedlings will need later.
With targeted conditions, you can virtually halt seed metabolism and preserve germination until the date printed on the seed packet. This way, you always have vigorous seeds on hand and lay the foundation for a bountiful harvest.
Storing seeds at home
To maintain the species-specific germination capacity, we recommend the following storage conditions at home:
  • Store in a dry place: Humidity promotes mold and premature germination.
  • Store in a cool place: 0°C to 10°C is generally ideal. The colder the temperature, the longer the seeds remain viable.
  • Low humidity: An ambient humidity of 20-35% is optimal.
  • Store in a dark place: Light deprives seeds of valuable nutrients and reduces the germination rate.
  • Airtight containers: Glass or plastic containers protect against moisture and oxygen.
Airtight jars or storage containers with tight-fitting lids are ideal for storing seed packets. For longer-term seed storage, a silica gel bag can be included. Silica gel packets can be purchased at pharmacies, drugstores, or online and ensure the environment remains dry. The gel can be dried at temperatures between 80 and 100°C, making it reusable. If you have the opportunity, you can also vacuum seal the seeds and store them in opaque packaging.

Special features of storage

Tropical plants are an exception when it comes to storage temperatures, as they originate from regions with consistently warm climates and are best stored at an ambient temperature of 15-25°C and a humidity of 30-60%. Because their seeds are not adapted to cold, they can be damaged or significantly lose their germination capacity at temperatures that are too low. Even in a dormant state, tropical seeds often have a higher metabolic activity than most of our known species. They therefore require milder conditions to avoid aging or degenerating.

Best before date

There is no legal regulation requiring the printing of a best-before date on seeds. Since germination depends crucially on many factors, we believe that simply stating a best-before date is not meaningful.
Therefore, we have taken the initiative and developed a rough guide to indicate the germination time of seeds for each individual user.

This means you'll find information about the species' viability and germination capacity on the front of our seed packets – bottom left under "Viability."
On the back, we've printed the harvest date directly at the top of the seed packets.
If stored properly, this information makes it easy to determine how long the seeds will remain viable.

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