Datura - Double Blue | Stunning | 5+ fresh seeds

• Soak the seeds in a cup of water for 12-24 hours
• Use containers at least 2 inches (5 cm) tall with drainage holes.  For soil, use a well draining mix  -ideally 50% compost and 50% vermiculite or perlite.
  
• Place a seed in each pot and cover with 1/2 inch (13 mm) of the compost mix.  
• Water the soil until it is evenly moist (but not saturated).
• The best temperature for germination is between 66 to 77° F (19-25).  Nights cooler than this are ok.  Avoid temperatures above 80° F (27°C).  
• Until they sprout, keep the soil surface moist.  Keep the pots in an area with some air circulation, to prevent stem rot later on. 
• The seeds can sprout at different times, usually between 3 weeks and 2 months, but occasionally longer.  
• Once they sprout, give them bright light, but shade them from strong afternoon sun
• Occasionally a seedling may not shed its seed coat after it emerges from the soil.  If the seed coat doesn't fall off by itself by the 4th day, try to gently pry it apart with your fingernails, tweezers, etc.  You don't need to remove it, just spread it open and the leaves should push it off.

There are plenty of variations on the above - check out some of the videos on the web.