Caper bush is a perennial deciduous shrub that grows wild in the Mediterranean region, while in Croatia cultivation is not recorded. The young sprouts and fruits can be consumed as a vegetable, while pickled or salted flower buds are used as a spice in cookery. Vegetative propagation (stem cuttings) is mainly used, since in generative reproduction the largest issue is low percentage of germinated seeds due to seed dormancy. Caper seed dormancy is result of impermeable seed involucre along with slime which is generated when the seed is placed in contact with water and thus the oxygen supply to the embryo is disabled. The aim of this study was to investigate the effect of different pre-seeding treatments (soaking of seeds in distilled water, chamomile extract, and in solutions of gibberellic acid GA3, potassium nitrate and commercial product 'Ekobooster 1', along with or without chemical scarification with sulfuric acid) on elimination of seed dormancy. It was proved that the GA3 treatment can partly eliminate dormancy of non-scarified caper seed, while other treatments didn't show any significant effect.