Groups of horticulturists wich objectives of research,
common production of quality stock, advertising or marketing

The Walloon Horticultural Trials Centre C.E.H.W. The nursery stock for woody plants : "Le Myrobolan de Lesdain" The Agronomical Centre of Applied Research of the Hainaut Province C.A.R.A.H. Fédération Wallonne Horticole (FWH) Other groups