Storage conditions depend on the projected future use of the seed. Seed storage has certain requirements which include protection from water, contamination, rodents, fungi, fire etc. However, relative humidity and temperature are the most critical aspects to keep in mind during storage.
If the storage temperature does not exceed 10°F and the RH is not higher than 50%, most species of seeds will retain their full initial viability for a few years. Many seeds will retain good viability for 20 years or more when stored at 1.7-4.4°C and 40% RH.
Long term seed storage conditions are typically set to -18°C while medium term collections are stored at 4°C and 30 to 50% RH. Dehumidification is provided using a chemical dehumidifier typically to achieve levels below 40%RH.
We can help you setup you program for seed harvesting and storage long term. Your wish is our command!
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