1970-1993 : Henri-Jacques Bourne turned Guillot-Bourne into a specialised nursery in mature trees and large specimen.
Restructuration of Guillot-Bourne nurseries. Henri-Jacques Bourne took over the company with fresh ideas.
The decision to specialise the nursery in mature and large ornamental trees was taken because of the quality of the soil and continental climate. Guillot-Bourne became quickly a reference for these trees.
Obtention of the 1st certification A.F.A.Q ISO 9002. The company became at this time the first one in horticulture to receive this accredition.
Creation of the brand GARECA® which among the others guaranty the trees for 2years.
Investment in new technics: transplantations in situ, fertilisation by injection for trees in cities, GEBEBAC Hf®…
From 1993 to 1998 Bourne family stayed the main stakeholder within the company.