As marijuana laws in the United States become less restrictive, more and more people are searching for basic marijuana gardening instructions. Cultivating pot isn't like growing houseplants or vegetables, especially if you desire maximum potency and yield. It takes precision. Among other things, you need female plants, very specific temperature, humidity and lighting at different times during the plant's lifespan, special nutrients, and the correct harvesting procedures. Idiot's Guides: Growing Marijuana covers it all, in a simple, concise way— with tons of full-color photography and step-by-step instructions.