Research on the medicinal plants was started by the researchers in the last century in order to allocate different valuable alternative resources to the increasing demands of population especially to those communities totally dependable on forests and other non-renewable natural resources. Linum usitatisimum is a renowned medicinal herb of the world of herbaceous plants because of its multipurpose uses in different disease treatments. The study was conducted to elaborate the performance of morpho-anatomical characters of Linum usitatissimum to diverse habitat conditions of Khyber Pakhtunkhwa. Five years cultivation data of Linum usitatisimum is analyzed with the objective to find best habitat for the growth and maximum yield of Linum usitatisimum and also to give farmer an easy way to get maximum benefit of his land resources during the rabbi season. The study revealed that Linum usitatisimum shows maximum yield at D. I. Khan.