Posted: 08/01/2015 at 21:19
Do you know what type of banana? Ensete are easier to germinate than other Musa.
First of all wash the seeds with hot water and a nail brush. They are covered with hormones that prohibit germination. Soak afterwards in warm water for 24 hours.
Easiest method is to get a ziplock sandwich bag, add the seeds, cover with compost and perlite, dampen soil and seal. Place on top of a heating boiler - you want the temperature difference of hot and cool. Failing that a hot water cupboard during the night and room temp during the day. After a few weeks/months, you should see them starting to germinate.