Ecological agriculture, agricultural production is based on natural cycles and processes, by using old sorts of seeds, genetically non-modified seeds, and in cattle-and-stock breeding; it is based on breeding native sorts/breeds. The purpose of an ecological production is aimed at the natural characteristics of plants, animals and landscapes, and to increase the resistance of plants in a natural way by using the prescribed compost/ or manure and products for protection of plants. Mechanical destruction of weeds, crop rotation, mid-season crops, application of compost and a biological fixing of usage of nitrogen are just some of the compulsory treatments and principles in ecological production. The very beginning of the ecological agricultural production in Croatia started in Zagreb in 1980 with the founding of the ‘ Association for Improvement of Quality of Life’. Until the legal regulations of the association were firmly established, the association worked in three phases until 1991: from 1991 to 2001 and from 2001 onwards. The association for biological organic agriculture (BIOS) has an important role in creating directions for the development of ecological agriculture. It was significant for this period that the Croatian Institution for Agricultural Advisory Service (HZPPS) was founded with the aim to help rural family agriculture. Discussions and mutual persuasions from various experts that it was impossible to produce sufficient amount of food and other agricultural products without mineral compost and pesticides, were challenged and repudiated by results of various experiments that started in 1981. Conventional and ecological productions were being compared. All negative effects can be removed by establishing a natural equilibrium, by putting in place a system with no usage of pesticides and/or mineral compost. The purpose of ecological production is aimed at the natural characteristics of plants, animals, and landscapes to increase the resistance of plants in a natural way by using the prescribed compost and products for the protection of plants. Mechanical destruction of weeds, crop rotation, inter-cropping, application of compost, and biological fixation of nitrogen are only part of the mandatory procedures in the principles of ecological production. Elements from the environment that affect the development of ecological agriculture are: established legal framework for ecological production, a legally binding system of control sponsoring of ecological agriculture as well as establishing a trend to increase demand for ecological products.