The invention relates to a method and device for administering at least one substance to a plant or plant material, comprising of: (i) providing at least one substrate with a surface and at least one plant location therein； (ii) providing injecting means； (iii) moving the substrate and the injection means relative to each other； (iv) controlling an alignment of the injecting means relative to the plant location； and (v) injecting the substance at the position of the plant location using the injecting means.
