Phytophtora resistant ChestnutsCOULIE nursery was created in 1972 by Jean Coulié. The nursery was first specialized in grafted walnut production and ornamental plants. The production was reserved to both wholesale and retail. In 1978 the society developed a new production: grafted chestnut. It obtained in1982, the first agreements to product new chestnut hybrids resistant to Phytophtora created by INRA.
INRA certificationThe nursery worked in collaboration with INRA and Agri-obtention to improve the in vivo and in vitro production of chestnuts. After two years of research and development, Jean Coulié developed a new technique of propagation for the new Chestnut hybrids: the cutting. This method of propagation is less technically hard and has a level of production higher than the other technique (Layering).
Ornamental Trees PlantsIn 1990 the nursery redefined its activity around two fruit species: chestnut and walnut, and three ornamental species: Morus kagayamae (Mulberry tree), Albizzia julibrissinand Lagerstroemia indica.
Jean Coulié selected his own varieties for the ornamental species: Périgord Vert (Mulberry tree), Rouge de Tuillère et Pompadour (Albizzia julibrisin), and Turenne, Collonge la Rouge, Padirac, Romadour (Lagerstroemia indica).
Green Grafting on ChestnutIn 1992, Jean Coulié developed the technique of green grafting on chestnut.
This process allows answering to specific order of producer, preserving old varieties and fitting specific rootstocks to physical characteristic of soils.