It has double dormancy and requires alternating cold and warm periods in order to germinate. Simply sowing the seeds outside in a seedbed or coldframe in late fall and allowing two full years for germination is the easiest method.
If you didn't throw out last years attempt, you may find they germinate this spring.
Otherwise, sow seeds and store in fridge for at least 90 days, bring into room temperature for at least 90 days and repeat. It will germinate when brought into the warm for the second time, so you need to time it so that it is spring then or you will need to grow it under lights.
It is a slow growing plant and will take three to four years from germination to flower.
waplummer
Judy_B_ON
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