Kazimir's father managed a sugar factory. Kazimir was the first of fourteen children, only nine of whom survived into adulthood. His family moved often and he spent most of his childhood in the villages of modern-day Ukraine, amidst sugar-beet plantations, far from centers of culture. Until age twelve, he knew nothing of professional artists, although art had surrounded him in childhood. He delighted in peasant embroidery, and in decorated walls and stoves. He was able to paint in the peasant style. He studied drawing in Kyiv from 1895 to 1896.