Abstract: An elastically resilient fastening clip is described which serves in particular for the fastening of trained fruit trees, vines, or the like to horizontally extending training wires. The clip comprises a slit loop the slit of which is widenable outwardly for introduction of a twig or the like part of the afore-mentioned plant and, after passing the plant part therethrough, closes again under the clamping effect of the loop of the fastening clip exercised at both sides of the slit. The clip further comprises hook parts bent at angles away from the slit in the loop; and, when the clip is fastened to the training wire, a contact zone of the loop opposite the slit is destined to lie essentially along one side of the training wire, and the slit and the adjacent hook parts are destined to lie on the other side thereof.