FAQ: How do I know what the appropriate moisture target for my species is?

1 Answer
Center for Plant Conservation's picture
Submitted by Center for Plan... on Tue, 07/02/2019 - 2:52pm

Review recommended drying conditions for seeds stored in moisture-proof containers at various temperatures. The given drying temperature and RH combinations give a storage RH of 20% at the indicated storage temperature (Walters 2004).

Drying Temperature (°C) Drying Relative Humidity for Storage at 15°C Drying Relative Humidity for Storage at 5°C Drying Relative Humidity for Storage at –20°C
25 28% 33% 35%
15 20% 26% 38%
5 14% 20% 32%

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