The influence of the harvest cut height on the quality of the herbal drugs Melissae folium and Melissae herba.

Variability in both the content and quality of essential oil was observed in herb and leaf drugs in dependence on the harvest cut height of lemon balm (Melissa officinalis L. cv. Citra).

[Comparison of the quality of Melissa officinalis L. cultivar Citra with Mellissas of European origin].

Within two vegetation periods, melissas from 17 European regions and the inland cultivar Citra were examined. Melissas differed in height, foliage, and essential oil content. In the cultivating conditions under study, two collections were possible in one year.