In an experiment conducted in 2016 in a living room of a dwelling house, we wanted to examine the possibility of cultivating sweet basil (Ocimum basilicum L.) in a vertical system, which we created in our direction. In the experiment, we included 4 varieties of sweet basil ('Emily', 'Red Rubin', 'Piccolino' and 'Lemon'). After six weeks, the seedlings were transplanted into the plastic pots, filled with coconut fibers (4 seedlings per sweet basil variety). Finally, we planted the seedlings by treatments in the floating system (9 pots = 36 seedlings/treatment) and the vertical system (9 pots = 36 seedlings/treatment). To determine the suitability of cultivating the sweet basil in the vertical system, we measured some morphological parameters (height, number of leaves developed, length and number of shoots, fresh and dry weight) and L-ascorbic acid content. No major peculiarities were detected when measuring the height as the plants were fairly uniform in both cultivation systems. In general, the plants grown on the floating system were higher than those in the vertical system. Only the 'Red Rubin' variety was higher in the vertical system (13,2 cm) compared to the floating system (8,3 cm). By the number of leaves developed, the plants were also equalized by cultivation technologies, with the exception of 'Piccolino' variety, where slightly greater deviations have been observed (floating system 173.8 medium-developed leaves, vertical system 113.2 medium-developed leaves). Even when measuring the length of the side shoots and their number, the best results were recorded with the 'Piccolino' variety. The highest yield of fresh mass was recorded in the 'Piccolino' variety, grown in the floating system (142,8 g), but on average the plants grown in the vertical system had a higher fresh mass. The dry weight yield was also higher for plants, cultivated in the vertical system, except for the 'Emily' variety, where we obtained a larger yield when cultivated on a floating system. L-acorbic acid measurements showed that, on average, the most of the vitamin C contained plants cultivated on a floating system ('Emily' 21,4 mg/100 g, 'Red Rubin' 16 mg/100 g, 'Lemon' 16 mg/100 g). Nevertheless, the highest value of L-ascorbic acid was recorded in the 'Piccolino' variety, grown in vertical system (30,6 mg/100 g).