Marijuana growers usally count on between 1/3 and 1/4 of the seeds planted reaching maturity.Normally 40-50 % of the plants will be males that you'll need to get rid of in order to obtain sensimilla.Most fresh seeds manage to germinate O.K.(95%) ,whereas older seeds (2-3 years) or imported seeds that may have suffered a long ,hard journey from overseas may not germinate at all.Dark brown or grey seeds stand a better chance of growing than white ones or those with a damaged or softened shell . The seeds should be planted in earth about 5mm. deep (ready-made containers made out of peat are ideal,and save space too). After watering cover the containers with shrink-wrap or a similar plastic film and put them in a warm,dark and well -ventilated place where they should be kept ensuring that the soil is always damp.Germination is usually over after 10 days.

The Soil.
1.5 parts of soil for geraniums.
2 parts pellets of expanded clay 
1 part matured cow manure.