The seeds require 6 weeks hot stratification. Sow directly on the surface of your moist but not soaked soil mix (preferably 1 part sphagnum moss and 1 part perlite or sand). Do not cover them with any medium, the seeds are really tiny. After hot stratification, somewhat uncover the top of the pot, so that moisture and heat drop a little. Place the pot in an area with real nice strong light and keep the temperature around 20°C/68°F.
When you see some tiny plants starting to sprout, slowly open the top of the pot, a little each day, so that the new seedlings don't go into shock from the humidity being lowered too quickly. After hot stratification, germination usually occurs in 1-3 months, but it can be prolonged up to several months, depending on their degree of unbroken dormancy, don't give up. Be very gentle with the new seedlings, not to destroy anything, it is very tiny. Make sure that it gets good air circulation.
How to hot stratify and what is it?: It creates a hot and moist environment for the seeds. This will break their dormancy. Place the seeds on top of a prepared soil mix. Put the pots with seeds in plastic ziplock bags under but not too close to florescent lights. A temperature around 25°C / 76°F works best. Make sure to check the seeds often. If fungus or mold appears treat it with a fungicide.