Trewlaney Garden Centre at Ashford has been sold to Wyevale Garden Centres.
The purchase of the 28,000 square-foot site means the company has a total of 142 garden centres in the UK.
The centre will be renamed Ashford Barnstaple, a Wyevale Garden Centre.
Kevin Bradshaw, chief executive of Wyevale Garden Centres, said: ?With a strong heritage going back more than forty years, Ashford?s garden centre is renowned for the excellent quality of its plants and products as well as its welcoming family atmosphere.
?This acquisition supports our strategy to grow our business by acquiring exceptionally high-quality garden centres in the UK, and we are absolutely delighted to welcome Trelawney Ashford?s customers and employees to our business.?
The site, which was bought by Trelawney in 2005, is a purpose-built centre with views over the Taw estuary.
The centre?s current owner David Danning said it had been a pleasure to run the centre and learn how to manage a multi-site business.
He added: ?Our plans for the future have changed over the last year and the timing of an offer for the site came along at the right time for us and for the business.
?Investment from Wyevale Garden Centres will create opportunities that will be of great benefit to our employees, and I would like to thank our staff for all they have done for us over the last nine years.?