Results showed that putrescine did not have any significant effect on rosette diameter, but there was significant difference in other factors. According to the findings, the most increase in number of leaves, flower diameter, leaf area, and dry weight belonged to the 75 ppm putrescine treatment. besides, the number of flowers and the amount of a, b, and total chlorophyll were maximum in putrescine concentration of 50 ppm. Although the putrescine concentration of 100 ppm led to decrease in the number of leaves, but it caused carbohydrate increase in petioles of African violet. The results showed that the effectiveness of putrescine plant growth regulator on African violet can differ depending on the concentration of plant growth regulator and type of the studied characteristic.