“…Corms also are a rich source of phenolic, flavonoid, and especially saponin (RubioMoraga et al, 2013), likely to participate in increased growth characteristics of the treated plants in the results of current research. Saffron stigmas contain nitroge nous substances, anthocyanins, glycosides, monoter penes, aldehydes, flavonoids, vitamins, volatile oils, proteins, carbohydrates (Amin and Hosseinzadeh, 2015). Also, some studies indicated the presence of micronutrients in saffron such as Zn, Mn, and certain amino acids (Priscila del Campo et al, 2009;D'Archivio et al, 2014), which favored the develop ment of the plant height and that the current results strongly corroborated with our previous study (Khoulati et al, 2019) with a concentration of 0.6 g/L, which contains 110.73 mg/L of crocin, 2.93 mg/L of safranal, and 37.45 mg/L of picrocrocin in the extract used in this study.…”