The purpose of the present invention is to improve a self-adhesion-type adhesive tape for banding branches, stems, vines, young shoots and the like of plants.A self-adhesion-type adhesive tape is produced, which comprises a tape-shaped backing and an adhesive agent applied onto one surface of the backing.An elastomer that constitutes the adhesive agent is prepared by mixing 10 to 80% by weight of a styrene-isoprene-styrene block polymer having a styrene content of 14 to 19% by weight inclusive with 20 to 90% by weight of a styrene-isoprene-styrene block polymer having a styrene content of 25 to 50% by weight inclusive.The self-adhesiveness retention property, i.e., such a property that, when parts of the adhesive agent on the self-adhesion-type adhesive tape are bounded to each other so as to form an A-shaped loop and a weight is suspended on the loop, the state of the suspension can be retained, is examined.The self-adhesion-type adhesive tape can achieve a sufficient level of self-adhesion property both in an environment having a temperature of 23° C. and an environment having a temperature of 40° C.
