Using organic methods, how can I make plants grow fast?
How to Make Plants Grow Fast
Growing healthy plants involves giving them the optimum amounts of all the things they need : water, light, and nutrients. Then, each kind of plant will perform at its best. Not all plants grow "fast," but those that do, will.
This article tells you how to use organic methods to grow the healthiest garden possible: https://www.gardeningknowhow.com/special/organic/how-to-grow-an-organic-garden.htm
And if you're interested in growing plants indoors, this article tells you more about doing that organically: https://www.gardeningknowhow.com/special/organic/indoor-organic-gardening.htm