A possible mechanism of growth-step generation from the edges of faceted crystals obtained from experimental observations with KDP crystals is described. It suggests that growth from the crystal edges is initiated by the deviation of the edges from their crystallographic orientation and formation of incomplete shapes of singular facets. The conditions for formation of the incomplete faceted shapes during dislocation growth are considered. It is shown that the process of step generation from the edges can be determined by the mutual positions of the vicinal slopes on the adjacent faces.