Help!!!!!! I have been trying for 3 years now to propagate nandina domestica from seed. Was told once that seed only germinates middle of summer regardless of when it is sown. The main problem in the first instance is how to keep the seed fresh from time of picking, winter, to time of sowing. It rots away in the fridge as well as in dry conditions. Should it be frozen? Then, once sown, what should the sowing conditions be? Under regular mist, on a hot bed or just in seedling beds? Should the seed be covered at all? In other words, are the seeds in need of light to germinate or should they be kept in total darkness?