The Tillington Group of Garden Centres Meet the Buyer event will take place on May 11 at Brentwood in Essex.
The group has 11 member companies with 38 garden centres, representing a combined turnover of more than £200 million.
Giftware Association said: "This special event gives suppliers the chance to meet face-to-face with the key decision makers of some of the largest award-winning gardens centres from across the UK."
The day provides the chance for suppliers to showcase their products to the team of buyers and "will follow the same format as a mini trade fair."
Meanwhile, Gardenex export association has a Meet the Buyers event with buyers from Dubai, Ireland, Norway and Sweden at its head office in Brasted, Kent on 15 March 2017.
Wyevale Nurseries in Hereford will jointly host an open day with its neighbour Allensmore Nurseries on March 8. Porters Fuchsias has a similar event on 9 March in Formby.