1. With organic gardening, fewer pesticides and chemical fertilizers are released into the environment, and humans are not exposed to potentially toxic chemicals.
2. Organic gardens reduce chemical runoff. Two tools in traditional are pesticides and chemical fertilizers. When you spray pesticides, the food you spray them on absorb some and you can ingest those chemicals when you eat the food. Some of the pesticides also go into the soil, where they can kill the soil microbes that form the basis of your garden ecosystem. Then you have chemical fertilizers, which do nothing for the soil texture and do little to build the long term nutrient capacity of the soil. These fertilizers give plants a quick boost and then wash off the top of the soil.