The effect of indole-3-acetic acid (IAA) and gibberellic acid (GA(3)) applications on parthenocarpic fruit set in Rosa canina and Diospyros lotus was investigated. GA(3) induced parthenocarpic fruit set in both plants, but IAA only in D. lotus. Maturation of seedless fruits was earlier than the seeded fruits. GA(3) caused a decrease in the fresh mass and size of both fruits. IAA induced an increase in the fresh mass and size in parthenocarpic fruit of D. lotus.