During 2007-2008 the studies were conducted to examine a protective effect of selected plant species against lygus bugs (Lygus spp.) in organic production of bean. The plants were cultivated on the experimental organic field of Research Institute of Vegetable Crops at Skierniewice. The experiment run in the following scheme: 5 rows of bean, 2 side rows of examined companion species. The examined species were: summer savory (Satureja hortensis L.), marjoram (Origanum majorana L), sage (Salvia officinalis L), big marigold (Tagetes erecta L.), red beet (Beta yulgaris L), onion (Allium cepa L), dill (Apium graveolens L). In the control the side rows were taken by bean plants The seed yield quantity and quality was examined by dividing total yield into following groups : healthy seeds, spotty seeds, wrinkled seeds, pitted seeds, common bean weevil damage seeds. The seed yield depended on the year of research. In 2007 the total seed yield was higher amounting on 3.67 kg per 10 m2 average. The share of pitted seeds in total yield was also high (31.0%). In 2008 the mean seed yield amounted 2.77 kg, and the pitted seeds made only 2.6 % of the total yield. In both years of research the smallest amount of pitted seeds was found when dill, marigold and onion were used as companion plants.