Plant life has always surrounded human beings, offering them its protection, feeding them, healing them, etc. Plant life is increasingly neglected, nature is polluted and destroyed, and with it the rich flora disappears. People are not aware of the importance of plant life for their own life and the life of future generations. Creating a sense and love of nature can only be accomplished by encouragement from the earliest age when they are primarily affected by the teacher. In order to establish the children’s level of knowledge about herbs and devise activities that would affect students' awareness of the importance of plant life, or herbal remedies that are offered is the chosen theme of this paper The knowledge of herbs for children of young school age. This paper briefly describes the history of medicinal plants, the definition, work, and application of the most famous healing powers of herbs. A survey was conducted with grade 3 pupils of elementary school Gradište. Pupils are tested by a questionnaire, after which the outdoor class is organized as an integrated day with the theme of Medicinal herbs to encourage awareness and the importance of medicinal plants. After the carried out activities pupils are tested with the same questionnaire to determine students' knowledge of medicinal herbs. Final research has shown great progress on knowledge of medicinal plants as a result of the activities performed as described in the preparation of the integrated day .