The advantage of an indoor growing environment is that you can very precisely control the factors crucial to plant growth and tailor them for specific types of plant. All plants require warmth, water and nutrients (absorbed from the soil or using a
hydroponic system where the plant sits in nutrient rich water). But most crucially, they need light and, as we shall see, not just any old light either.
The way that all plants grow is by photosynthesis, the process whereby carbon dioxide (CO2) is converted into the organic material that makes up the plant (carbon, proteins, sugars ...
