A water-dispersible plant growth regulator composition in the form of concentrated suspended particles, and more particularly comprising a cytokinin, a surfactant, an antifoam, a buffer system, an antifreeze, and an anti-settling system dispersed in water. A growth regulating composition. [Selection figure] None濃縮懸濁粒子形態の水分散性植物成長調節組成物、そしてより特別には、水に分散した、サイトカイニン、界面活性剤、消泡剤、緩衝系、不凍剤、及び沈降防止系を含んでなる成長調節組成物。【選択図】なし