Cannabis Knowledge · 2026

Storing Cannabis Seeds Properly

Bad storage is the #1 cause of poor germination.

Updated 18 July 2026 7 min read

Three enemies

Humidity >40 % activates enzymes, heat >20 °C accelerates aging, light triggers germination sensor.

Optimal conditions

4–8 °C fridge crisper, 20–30 % RH, silica gel, tinted glass.

Step-by-step

Seeds in original cell pack or small zip bag, then into small labeled glass with silica gel, then fridge crisper drawer.

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FAQ

How long do cannabis seeds last?+

Optimally stored: 5 years at 90 % germ rate, up to 10 years at 60–70 %.

Can I freeze seeds?+

Yes at -18 °C. Vacuum first and acclimate before germinating.

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Related reading

Knowledge

Germination guide

Sources & references

The following sources let you consult the legal or scientific basis for this article.

  1. [1]Eigenanbau — Rechtslage— BAG
Topic cluster: Cannabis cultivation
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