When should I sow seed of Astrantia major?
I collected seed heads from 3 different colours and shook out the seeds into envelopes. Checking the internet it seems that it may not be as simple as just sowing them in seed compost in my greenhouse.Something about needing hot/cold spells to germinate? And there are differing views as to when to sow. Any advice gratefully received.
- 24 Aug, 2009