Process for treating living plants for the production of naturalised plant elements, essentially comprising a the removal of plant elements by cutting from living plants under cultivation, b the immersion of the cut zone of the plant elements thus removed, in a naturalization liquid comprising essentially water, glycerine, one or more dyes and one or more nutritive substances and c the drying of the plant elements after their withdrawal from the naturalisation liquid, characterised in that the removal a is carried out for the elements of deciduous plants, the elements of evergreen plants other than conifers, the elements of conifers other than pine, and the elements of pine, during the 21st or 22nd week, during the 38th or 39th week, during the 34th or 35th week and during the 10th or 11th week respectively, from the beginning of the vegetation which results in the bursting of the buds, leaves, needles and flowers after the resting stage for the vegetation and, for the flowers, the elements of Gramineae and the elements of aquatic plants, when the blossoming stage has reached 75-85%.
