Gibberellic acid (GA3) ndi wowongolera kukula kwa mbewu.Amagwiritsidwa ntchito kulimbikitsa kukula ndi kukula kwa mbewu, kukhwima msanga, kukonza zokolola, kuswa dormancy wa mbewu, tubers, mababu ndi ziwalo zina, kulimbikitsa kumera, tillering, bolting, ndikuwongolera kuchuluka kwa zipatso.Ndiwothandiza makamaka pothetsa vuto la maluwa osowa popanga mbewu za mpunga wosakanizidwa.Amagwiritsidwa ntchito kwambiri mu thonje, mphesa, mbatata, zipatso ndi ndiwo zamasamba.