The purpose of this research was to examine some aspects of buying behaviour of Croatian organic vegetables consumers, and to explore factors influencing buying frequency. A survey was conducted with 404 respondents in four selling points in Zagreb: two specialized organic food stores, one supermarket, and one city market. The survey results have shown that three most often bought organic vegetables species are: green salad, tomatoes and carrots. Most consumers claim to buy organic vegetables occasionally, and most often in specialized organic food stores. Gender, number of household members, presence of children under 12 years in household, self-rated knowledge about organic vegetables, as well as usual buying place of organic vegetables have strong influence on buying frequency.