Strawberry is one of the most popular and most important small fruits the world. Vegetative and reproductive growth in strawberry, are influenced by genetics and environmental factors such as temperature and day length. Excessive vegetative growth will result in shading, reduced photosynthesis and carbohydrates content, reduced flower and fruit formation, irregular pollination, increasing the formation of bad shape fruit, spreading illnesses and poor fruit quality due to competition with reproductive growth. High labor cost and plant damage limit the use of mechanical methods for reducing vegetative growth. For this reason, they use more than chemical methods. Plant growth retardants (PGR) such as paclobutrazole and calcium prohexadione that are applied in horticultural crops to reduce unwanted vegetative growth, act by inhibiting gibberellin biosynthesis. The objective of the present work was to evaluate these two PGR for suppressing vegetative growth of short-day strawberry plants cultivar Paros. The experiment was carried as factorial in a completely randomized design with four replications. The plants were sprayed with 0, 100 and 150 mg/L calcium prohexadione and 0, 60, 90 and 120 mg/L paclobutrazole at two stages. The results showed that paclobutrazole and calcium prohexadione significantly reduced shoot fresh weight, shoot length, root length, specific root length, petiol length, trairation and fruit total acids and increased leaf fresh weight, specific leaf weight, root weight ratio, crown number, flower number, fruit set, yield, photosynthesis, chlorophyll, carotenoids and anthocyanin concentrations. The interaction of 100 mg/L prohexadione calcium and 120 mg/L paclobutrazole was the most effective treatment for reducing the shoot length, petiole length and trairation. The highest chlorophyll content, fruit set, fruit firmness and anthocyanin content were obtained at 100 mg/L prohexadione-calcium without paclobutrazole. Fruit weight and total soluble solids were not affected by growth retardant treatments. Key words : Gibberellin, Paclobutrazole, Prohexadione calcium, Reproductive growth, Spray, Vegetative growth