Picture posting is enabled for all :)
If I remember right some seeds, such as trilliums, have dounble dormancy (if that's the right term) and need two cold spells before they germinate.
I've been quite interested in biodynamic gardening for some time but never tried it out. However, GYO magazine (Jan issue) are running an experiment whereby readers grow a variety of veggies grown biodynamically and others grown the usual way and comparing the crops. I'm definitely going to give it a go.