Chamomile, Chamomilla recutita /L./Rauschert, is one of the most favoured and most demanded medicinal plant. Plant population biology is a synthetic discipline aimed at understanding the mechamisms of growth and reproduction controlling of individuals or population with a possibility to predict (to model) their status under favourable or unfavourable environmental conditions. This contribution is aimed at the study of some aspects of plant population biology in chamomile productional stands. External morphological characteristics of chamomile such as the height of plant, the number, size and shape of leaves, the number of offshoots and anthodia, are not constant. Accordingly, the existence of controlling and compensatory mechanisms, closely related to ecological limits, was clearly demonstrated in chamomile productional stands.