Roses are one of the most popular ornamental plants and are widely cultivated in various countries, including Indonesia. Roses are often used as cut flowers and as floral accents, and their essential oil can be used as an ingredient in pharmaceutical and beauty products, as well as in the food and beverage industries. The demand for roses continues to rise; given this high demand, production must be increased accordingly. Therefore, vegetative propagation is necessary. Cuttings often fail to produce roots. One approach to overcoming this failure in root growth is the application of plant growth regulators (PGRs). The purpose of this study was to determine the effect of natural plant growth regulators on the growth of rose cuttings (Rosa sp.).  This study was conducted from February to April 2026 on the grounds of the Faculty of Agriculture at Graha Nusantara University in Padangsidimpuan. The experimental design used was a non-factorial randomized block design (RBD) consisting of 4 treatments and 6 replicates, with treatment involving red onion plant growth regulator (PGR) extract: P0 = control (no red onion extract applied), P1 = 100 grams of red onion extract, P2 = 500 grams of red onion extract per, and P3 =  750 grams of red onion extract. The results of this study indicate that the germination rate and number of shoots had a significant effect on the success of rose cuttings. The best results were obtained in the treatment with a dose of 750 grams of red onion extract, the number of roots and root length had a significant effect on the success of rose cuttings, with the best results achieved using a dose of 500 grams of red onion extract.

Keywords: rose cuttings, red onion extract Plant Growth Regulator, growth

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