It is important to determine ways to increase flower quality, flowering period and some other characters related to bedding plants performance. Thus, a CRD-based factorial experiment was conducted in Research Fields of Shahid Bahonar University of Kerman. The seeds of marigold used in this experiment were sown in pots on 20th Farvardin 1391. Spray was applied at 4 stages over the experiment period using thiamine (0 and 100 mg L -1), ascorbic acid (0 and 100 mg L -1) and benzyl adenine (0 and 200 mg L -1) solely or in combination with five replications. The results indicated that the highest total fresh weight, shoot and root dry weight were obtained in the combined treatments of the chemicals with an increase of 100%, 101% and 170% compared to control, respectively. Meanwhile, the highest flower number, flower diameter and flower longevity were gained also in the combined treatments of ascorbic acid, thiamine and benzyl adenine which increased to 1.52, 1.25 and 0.67- fold in comparison with control, respectively. The findings of this research showed that the highest photosynthetic pigment and reducing sugars were found in the combined treatments