The influence of the environment on the studied characteristics can be detected were growing genetically similar plants in different environmental conditions. Medicinal plant Leonurus quinquelobatus Gilib. (five-bladed motherwort) refers to the ruderals which are most responsive to changing environmental conditions.

Plants were grown via seeds from genetically uniform material in three regions of southern West Siberia on experimental fields (Kemerovo; Novosibirsk; and Kamlak Village, Altai Republic). Measurements were performed on each experimental field three times during the growing season for three years on 10 model live plants.

The variability of 24 linear, quantitative, and calculated vegetative and generative features was studied. The following features have changed statistically significant from the phase of development: height of plant; branching first-order shoots; length of the generative parts; the proportion of inflorescence in the plant height; width generative part of the shoot; the number of flowering internodes of the first-order shoot; the number of internodes with buds; flowers; fruit; flowering index 1 and 2; the index of fruiting. The following features have changed statistically significant in different habitats: plant height; branching of first-order shoots; all the generative features which we have studied. The branching index and flowering indices were changed due to the interaction of factors. The projection area of the aboveground part and the number of third-order shoots on a second-order shoot did not depend significantly on either the development phase or the growing region.

In further studies, the number of morphological features studied can be limited depending on the purpose of the study.