According to the new company, Advini will be the third largest wine producer in France, with 1,450 hectares of vines across the south of France, Chablis and the New World, and with an annual turnover of €190 million.
After the merger the Jeanjean family holds 49% of the capital and the Laroche family 11%.
The headquarters of the new group will be based at Jeanjean’s former head office in Saint-Felix de Lodez, near Montpellier.
Jeanjean chairman Antoine Leccia said: “This merger follows the logic of an increasing level of concentration within the French wine sector.
“It represents a vital step in the light of the challenges facing the wine industry worldwide. It is also perfectly coherent with the group’s strategy of moving towards premium quality.”
Laroche chairman Michel Laroche added: “The pooling of our skills and the resulting synergies will provide us with the means to push forward with the development of premium brands both in France and abroad, while significantly improving the profitability of both groups.”