Notcutts Garden Centres chief executive Andy King has left after five and a half years to move to Tesco-owned Dobbies, replacing James Barnes, who left suddenly last week.
Finance director Andrew Staff will take the role of Notcutts interim CEO following King's departure.
Notcutts chairman Edward Creasy said: "Andy has worked with great commitment to develop Notcutts as a company and a brand over the last five years and he leaves the company in excellent shape. We wish him the very best as he moves on to the next stage of his career."
A Dobbies representative said: "We are pleased to announce that Andy King is joining Tesco as a general manager where he will take up the role at Dobbies Garden Centres as managing director.
"Andy joins us from Notcutts Garden Centres business where he has been CEO since 2007. He has over 25 years of UK, international and multichannel retail experience with 12 years at board level. Prior to Notcutts he spent his early career at Boots, W H Smith and Mothercare before joining the Body Shop as Global Marketing Director.
"Andy will help continue to grow Dobbies from our current position; and help us focus on bringing the brand to more customers, working across all channels and with the core Tesco business.
"Andy takes up his role at the beginning of September and Dobbies commercial director, Katharine Poulter, will continue to lead the business in the meantime.
"Max Britten, currently working within group financial planning and analysis management at Tesco Group, is seconded to head up the Dobbies Finance Team as interim financial sirector, reporting to Katharine Poulter. He has varied Finance & IT experience across a number of companies, including Unilever, Mars, BAA and Associated British Food."