Nick Davies has left Solus Garden & Leisure, to be replaced by Mark Pearson, former Gardman chief executive.
Company founder Simon Yealland remains as chairman.
Davies resigned from the company and is leaving in January 2014 to start up a new business. He denied he was leaving only last week.
Commercial director Ross Yealland said: "I am delighted that Mark has joined Solus. He brings with him a wealth of experience in the UK and international gardening industry, and joins us at a time when we are making a number of strategic investments to drive the business of our customers, our branded distribution partners and Solus own brands.
Simon Yealland added: "Nick Davies has made a significant contribution to Solus in the 29 years since he joined the company, and he leaves with our thanks and best wishes for the future."