I collected Dahlia seeds last October 2013 from ripe seedpods (brown/black). The seeds were brown/black after drying and were then stored over winter in packets in a cool, dark area of my garage.
I have just sown my first batch this last week on seed compost in an electric propagator at about 15 - 20 deg C. So far none have germinated. I am wondering if they have all died and if so what is the most probable reason. Has anybody else had the same results?
Thank you for any advice you can give.