Proper air circulation is important to prevent cannabis problems. Setting up small fans in the grow space to move air above and below the plant canopy is a great way to make sure all plants are exposed to a breeze. Learn more about air circulation here: http://www.growweedeasy.com/exhaust
Fabric pots (such as the "Smart Pot" shown here) are great containers for growing cannabis. Fabric pots help prevent overwatering while getting more oxygen to the plant roots. They're easy to use, and growers consistently get better cannabis growth in fabric pots than most other types of growing containers. They're also easy to make at home if you don't want to buy one from the store.
This moving picture shows how different cannabis strains affect how plant grow. It's important to match up strains that are going to be grown together in the same space, because the best indoor yields come from plants that are all about the same height during the flowering stage.
This diagram shows the difference between male and female "pre-flowers." These are the first signs of plant gender. It's important to be able to tell male from female plants as only female cannabis produces bud. Most cannabis growers remove male plants immediately after they show their gender, because male cannabis plants produce pollen that can cause seedy buds (plus they don't make any buds of their own).
After topping or FIMing, the connections to each node become enlarged at the base, this is because the plant is spreading energy more evenly across the whole plant. Basically, she wants to increase the flow of nutrients, water, and other plant processes to all nodes, in case she loses another cola. Original link: http://growweedeasy.com/how-to-grow-short-bushy-marijuana-plants