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How long is the lifespan of Asarum seeds, and how many years can they be stored?
The lifespan of Asarum seeds is very short. Naturally matured seeds have a very high germination rate, reaching 99%. However, when stored under dry conditions at room temperature for 20 days, the germination rate drops to 81%; at 40 days it drops to 29%; and at 60 days it is only 2%. This shows that when Asarum seeds are stored dry indoors after harvest, the germination rate gradually decreases as the storage period lengthens, and the dry storage period is only 60 days. Because Asarum seeds cannot be stored dry indoors, they should be sown immediately after harvest or treated by sand stratification.