Producers of walnuts

card original producers COOPENOIXCOOPENOIX, these are more than 450 members and about 100 independent producers across an exceptional country. Three departments are concerned: Isère, Drôme and Savoie. the walnuts growers are real professionals who cultivate their orchards in a perfect compliance with environmental rules.

Under the drive of the cooperative, many producers also get into a reasoned culture or, for some of them, an approach of GlobalGap certification .

Modernization of mechanical harvesting and drying gave to these men and women the development deserved to promote their tradition and the protected designation of origin THE D.O.P. GRENOBLE WALNUTS fits perfectly in the tradition and culture of the Dauphiné.

A year with a walnut producer


From February to March: pruning, planting and maintenance of the walnut trees.
From April to August: fertilization, irrigation, treatment, mowing of orchard and fight against diseases and pests.
From late September to late October: harvest mechanized with several passages under the walnut trees.
End of October: end of the pickup with shaking of the trees to harvest the last walnuts.
Walnuts are bringing back to the farm to be washed, dried, sorted and are finally delivered to the Cooperative from October to December.

In the memory of producers, a few dates left its mark to the spirits!


  • 1928 is marked by terrible frots and this is the storm that in 1929 destroyed 50% of orchards.
  • In 1946, the drought have devasting effects and it's spring freeze that destroyed the crop in 1949.
  • The winter of 1954 and 1956 are also marked by such frosts that the a lot of walnut trees no produce any more for several years.
  • It is drought, which is at the origin of the bad harvest of 1976.
  • On the 7 and 8 November 1982, a violent storm strikes the orchards, laying down 50,000 walnut trees in the South Grésivaudan Valley.
  • The fate desperately attempted to us, in 1985 with a freeze wave that destroyed 80,000 trees on the following three years in the area of production.
  • In 2003 it was again drought which weakens the harvest.
  • Finally in 2008, hail and storm destroyed 12,000 trees.
  • These recurring disasters have brought the walnut growers to improve the implant of orchards and implement weather alerts.