The present invention relates to a device for injecting at least onechemical substance and/or preparation into trees and/or palmaceae,characterized in that it comprises:a) a vessel (1) comprising inside an elastic container (2) suitable forcontaining the chemical substance and/or preparationb) a connecting element (3) adapted to be introduced by at least one of itsends into the tree or palmaceae trunkc) an adapter system located at the vesseloutlet, which in turn comprises amembrane-carner element (4), a non-return valve or membrane (5) and anadapter system closing element (6)as well as a procedure for applying at least one chemical substanceand/or preparation to at least one tree and/or palmaceae.
