So if you want to grow medical marijuana, marijuana for recreational use or make some money with it, this beginner grow guide will help you grow the best marijuana. Learn all about marijuana seeds, watering, pruning and harvesting marijuana both indoors and outdoors. If you grow marijuana indoors you can yield up to 18 ounces per 10 ft2 with a 600 watt HPS light. Outdoor yields of up to 18 ounces per plant are possible. It all depends on the love...