Plants need CO2 to grow. Its the main macro-nutrient besides water. The more CO2, the faster it will grow. If you increase the CO2 levels from 300 parts per m

Plants need CO2 to grow. Its the main macro-nutrient besides water. The more CO2, the faster it will grow. If you increase the CO2 levels from 300 parts per million to 1200 parts per million you will get a huge increase in the speed and size of growth of any plant. You can increase the CO2 level very easily by buying a CO2 tank and releasing it near the plants, or you can do what I do and brew wine right next to the plant because the byproduct of the yeast creating alcohol from sugar is CO2. But whenever I try to explain this to the global warming crowd, and other facts debunking global warming, they get really really upset. I think one time I even got called a racist for pointing out scientific fact.