Charles S. Ceronio has been designing bonsai plants for more than four decades. He studied the art of bonsai under the guidance of the world-famous bonsai master, John Naka and is co-founder of the Pretoria Bonsai Kai. He is the originator of six uniquely African bonsai designs and regularly conducts bonsai demonstrations and workshops in South Africa and abroad. As an initiative to promote the growing of master bonsai trees in South Africa, he established the annual Top 10 Bonsai Exhibition.