Marijuana grows best in fertile soil that receives enough water, exposed to strong light in a warm and airy environment. To reduce the complexity of environmental factors that may control the grower, you can perceive the environment as being composed of four basic factors for growth: light, air, water and soil.
Each of these four elements form a link in a chain, and the plant cannot grow faster than your weakest link in the chain. For example, if there is not sufficient light, this will limit the growth regardless of the existence of abundant quantities of water and a high fertility of the soil. In the same vein, if the soil nutrients are scarce, growth is limited by the quantity of nutrients, regardless of how much light, air or water the plant has.
The first harvest is always a learning experience in which even if the production is successful, each grower will think that the next will be even better. And usually happens. Also, with each harvest, cultivation becomes easier as you get answers to questions and doubts disappear gradually. Any experienced grower will most likely say “There is no better place where I could be or something better to do than sit around my plants and caring for them.”