Mentha is a perennial plant, a herbaceous rhizome. Due to the importance of this type of flood irrigation on its quantitative variables in Kashan. For this purpose, in each of the flood and control areas, a sampling area was identified. In each of the reagent areas, sampling of vegetation was performed in the form of 10 transactions and 60 plots in a systematic-random way. The percentage of crown coating and density was measured by the planting and olive method of the plant by the double method. To determine the amount of underground olives, 98 bases were selected with proper spatial distribution and up to 2 meters, all roots with a diameter of more than one millimeter were collected and weighed. With the total olive weight of the plant, the ratio of the underground olive to the aerial olives was determined, and by applying this ratio in the aerial olive weight, the underground olive weight was estimated in both areas. The results showed that flood irrigation had no significant effect on any of the variables evaluated (P <5%). This achievement indicates that the species is well established and developed in arid regions and is physiologically adapted to water shortages.