Anyone can grow marijuana.  You don't need a green thumb to grow marijuana successfully. With a little time and effort you can grow quality marijuana as good as any medical or recreational marijuana dispensaries.  The most important way to start off growing your own marijuana is acquiring good seeds. Buying seeds from a reputable seed bank can save you a great deal of hassle and wasted time. The second most important thing is to read a good growing guide. For both guide and seeds I recommend ​​I Love Growing Marijuana. They stock affordable, quality seeds for dozens of strains and the Marijuana Grow Bible is one the best FREE growing guides available.