Cannabis seeds will grow like any other plant so long as they have the right conditions to thrive in. The key ingredient is light.
For outdoor growers who want to know how to grow cannabis seeds, this means daylight and sunshine. In an indoor grow space, the grower is in complete control of the environment and will use the grow lights to simulate this natural change in light/dark hours.
As the plant gets established, and is growing to fulfil its potential, controlling humidity (or, in the case of outdoor growing, minimising its effect) is another key factor to prevent mold forming on cannabis plants in the later stages. A clean grow environment also minimises the risk of plants being affected by pests and diseases.