Manures provide added trace elements, enzymes, vitamins and other plant growth factors. They improve soil structure and build soil humus. It greatly increases the population of beneficial and disease suppressing micro-organisms. Manures release the nutrients slowly and provide plant food over a period of months and years. Manures provide a whole array of nutrients essential for plant and human nutrition such as vanadium, iodine, selenium, chromium and a host of vitamins and other phytochemicals. Chemical fertilizers have no beneficial micro-organisms as they destroy them and does not contain the minerals and vitamins which are essential elements. These nutrients are only available in manure. They create more robust and healthier flowers and far more nutritious and better tasting vegetables.