The plant attachments are formed to present an open annular section, open to one side, with the branches curved around towards the outside, to form sections, by which they are attached to the supports. The annular section is formed into the shape of an isosceles triangle, with the equal sides (2, 3) as the lateral sides and the third side as the central side (1). The side legs are extended, towards the ends away from the central side, by extensions (4, 5), which are bent at a different angle (alpha) towards the inside of the triangle. These extensions are then extended further to form the branches (9,10), which are joined to the triangle side extensions by means of two transversely flexible links (7,8). The branches are then curved back at their outer ends to form hooks (11,12), which are attached to the support wires (D).