Seasonal variations of natural products in European herbs

Abstract The present review gives an overview about the status of research on seasonal variation natural products in herbs growing or grown Europe. Due to pronounced differences weather patterns, papers covering plants from Mediterranean, temperate, and cold climate zones are reviewed separately. Apart trying give existing newer literature after year 2000, we try identify some repeatedly found trends discuss possible explanations for these trends. Moreover, suggestions, which encompass both bias desirable quality standards concerning experimental designs future studies, given. covered investigations mainly focused aerial parts leaves. Some publications also dealing with flowers roots. composition essential oils aromatic particularly well investigated. Phenolics most often studied compound class, including different types phenolic acids, flavonoids, tannins. Additionally, assess alkaloids lipophilic compounds.