The aim of this study is the evaluation of changes which occurred in starch content during the growth and the development of three varieties of plums Stanley, Vânăt de Italia, Tuleu Gras. Depending on variety, the maximum amount of starch was reached in phases 3 and 4; the values have declined as the fruit was approaching the maturity stage. The amount of starch during plum fruit growth and development is influenced by the harvesting phase, variety and the interaction between variety and harvest stage.