The purpose of this thesis was to determine the influence of the rose hip cultivars (Rosa canina L.) on the dimensions of the bush (width, height, depth), beginning, full and end of flowering, date of harvest, yield and on the texture, color and taste of jam. Cultivars were 'Laxa (Inermis)', 'Schmids ideal' and 'Inermis'. We monitored 10 bushes from each cultivar (30 in total). The experiment was performed at plantation in the village of Petkovac in Novi Grad, Bosnia and Herzegovina in the growing seasons of 2020 and 2021. We found that the bushes of cultivar 'Laxa (Inermis)' are the least vigourous, the bushes of cultivar 'Inermis' are the most vigourous. The average bush height after pruning (2020) for cultivar 'Laxa (Inermis)' was 1,15 m and 1,24 m before pruning (2021). For cultivar 'Inermis', the average bush height after pruning (2020) was 2,0 m, and 2,22 m before pruning (2021). All cultivars bloom at the same time. Cultivar 'Inermis' blooms first (May 9th), followed by cultivar 'Laxa (Inermis)' (May 12th), cultivar 'Schmids ideal' blooms last (May 14th). Fruit of cultivars 'Inermis' and 'Laxa (Inermis)' were harvested on October 5th 2020 and fruit of cultivar 'Schmids ideal' on October 10th 2020. The largest fruit height (26,6 mm) and heaviest fruit (2,04 g) were measured at the 'Inermis' cultivar, while the 'Schmids ideal' cultivar had the smallest fruit height (16,53 mm) and the lightest fruits (1,17 g).
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