In the Republic of Croatia, fruit growing is a traditional and valued agricultural activity. Although lupine fruits, including walnuts and hazelnuts, are found in all the fruit areas of Croatia, their production does not meet domestic needs. In the period from 2010. to 2017., Croatia had imported 1.167 tons of lupine fruits on average and exported 275 tons with self-sufficiency of 23,56 %. In that period, areas where nuts are planted have increased by 27 %, while the areas where hazelnuts are planted have increased by 38 %. Retail prices of walnuts and hazelnuts with shell are constantly increasing and they range around 20 kn/kg. In recent years, due to concerns about health and desire to preserve the environment, the growing trend of ecological production is growing. Ecological production areas are growing, and from 2013. to 2017. they have increased by 58 %, with lupine fruits growing by 68 %. This thesis investigates the feasibility of ecological production of walnuts and hazelnuts in Požeško-slavonska county for the production year 2017. The data were obtained through a deep interview of two family farms. First farm is located at Lipik and it has 300 walnut trees on 2,50 hectares, and with ecological walnuts production it has gained 20.800 kn/ha, economics 1,38, productivity 231,11 kn/hr and profitability 8,97 %. Second farm is located in Pakrac and has 15.000 hazelnuts on 30 hectares of production area. This economy has generated revenues of 21.300 kn/ha, economics 1,66, productivity 608,57 kn/hr and profitability 46,27 %.