Natural gardening promotes the ecological balances that nature intended.
Chemicals can be antagonistic to these balances and are often toxic materials with the potential to harm you and your environment. The toxins can enter into plants and cause food plants like fruits and vegetables to be less nutritious than is desirable. No this is a myth. Natural plant foods and fertilizers are often more expensive to buy but they last much longer and provide greater overall nutrition to plants. In the long run natural plant foods are actually less expensive to use.