Human brings always look after nature and its feature to improve their life and it becomes first line of human knowledge.
In this way, knowing different aspect of medical plant has old history surviving them cause catching historical knowledge .
We can see, some aspect of plant therapy in different universal culture. This subject in Persian poem, widest area of Iranian culture, has important aspect.
Iranian poets point to the medical plants and its applications and they use it in mysticism, lyric, …
Surviving this significant aspect in Persian poets shows importance of medical plant between Iranian .We see how poets connect some of their knowledge to the poems. By studing these works we can see using that knowledge today .