Both CytoGro and RGS are designed to stimulate root growth and a strong root system helps your turf through times of stress, such as heat and drought.
CytoGro is an extracted growth hormone - highly concentrated - nothing else.
RGS contains sea kelp (which also contains growth hormones) plus humic acid as a carbon source and is less concentrated.
RGS is an overall soil builder + growth stimulant whereas CytoGro is only a growth stimulant.
Keywords: CytoGro, RGS, growth hormone, growth, growth stimulant