Since I have sent out a lot of seed lately, I thought I would repost these instructions as well.
The seed has been stratified in my fridge, so it is ready to sow. what you want is a fairly loose medium for the small roots to penetrate, which is why I recommend peat/silica sand 50/50. If you plan on transplanting after the seedlings develop a little, then pure peat is an option, as is milled dead sphagnum moss. Both these substrates have natural antiseptic qualities, and they also discourage fungus and algae. Algae can interfere with germination, and competes with the seedlings. You should however aim at getting them into their permanent homes in a good 50/50 mix as stated after they form 4-5 leaves. Remember to be patient: this seed can take awhile to germinate, usually in about a month you should see some results. Don't water or spray from the top as this can bury the seed. Give it warmth, but light levels should not be high until there is germination: too much light will support algal growth. Check the pots weekly, and when you can see germination, move the pots into good bright light, no direct sun. Humidity should be reduced in stages, slowly, after germination. If the pots are in baggies, poke a hole or two after you are sure all the seed has germinated. Then in a week a couple of more. Ideally you will be able to do away with the cover in a month or so. Be attentive to what the seedlings tell you, but expect some to die off in the process. The survivors will be adapted to harsher conditions, and will be healthier than plants grown in too high a humidity. 70% is about ideal for these plants, but they will take lower levels if they are adapted to them over time. It is fascinating to watch the growth process, and I consider growing from seed to be one of the finest aspects of this hobby. Enjoy!