Amygdalus scoparia is native to Iran. This species has an important role in fighting desertification and yielding human consumption products. The experimental method used was a factorial design. The effects of temperature (7 and 22 degrees C) and GA3 were tested. Germination percentages showed no significant differences at the tested GA3 at 7 degrees C, but were significantly at 22 degrees C. Significant differences were observed between the control and 500 ppm GA3. The highest seed germination percentage was observed with 125 ppm GA3 at 7 degrees C. Effects of GA3 treatments on seedling root lengths were not significant at either temperature tested but temperature itself had a highly significant effect. The maximum seedling lengths were observed with 250 ppm GA3 and 22 degrees C temperature. Effects of GA3 treatments on seedling lengths were significant but temperature had no effect on stem elongation. Treatment with GA3 up to 250 ppm doses increased plant length.