Introduction Over the last years there has been an essential increase of the topicality of using biorational resources in ecology-focused plants protection systems from pests and diseases. This is primarily due to environmental pollution, as well as increased resistance of pests to the used chemical agents. One of effective directions in plant protection is preparation and use of plant extracts containing biologically active substances with insecticidal and fungicidal properties. To the number of plants with insecticidal and antifeedant activity towards the phytophagans belong the representatives of the Juniperus L. species. We found that promising in this regard is the Cossack juniper - Juniperus sabina L. (Cupressaceae). The objective of the study was aimed at determining the resource capabilities of Juniperus sabina in Moldova for obtaining extracts that are biologically active against Leptinotarsa decemlineata Say. Material and methods Analysis of J. sabina plantations in Moldova was held with help of Professionals of The Botanical Garden (Institute) of the Academy of Sciences of Moldova and Forest Research and Management Institute (ICAS) Chisinau [1]. Collection, drying, crushing, storage and preparation of raw materials and obtaining plant extract were performed according to standard procedures [3, 4]. J. sabina extract testing (0.1% dw, 7.5 l/ha) to determine its biological effectiveness in 2013 was conducted at the experimental fi eld IGFZR ASM on potatoes in accordance with conventional methods [2]. Results and discussions The studies have shown that the currently estimated resource of J. sabina materials in Moldova, obtained from the annual pruning only in the Botanical Garden and two nurseries (Jargara and and Teleneshti), is enough for treatment of 8.4 - 12.7 ha of potatoes (depending on the frequency of treatments - once or twice). It is possible to increase the calculated amount of raw material at least by 1.5 times at the expense of other areas (reserve Lozova; v. Kishkareni, district Sinjerey.) Cost of received by us J. sabina extract for the treatment of 1 hectare of potatoes from L. decemlineata is on average from 1200 lei. At the same time the average cost of insecticide ranges from 150 to 300 lei per 1 ha; per season for chemical treatment of 1 ha of potato producers spend 700-800 lei and more. It was proved that the biological effectiveness of the extract, prepared from J. Sabina, for three weeks has maintained at the level of chemical standard (Midash 200 SL, 0.3 l/ha). Meanwhile, the number of larvae did not exceed la thresholds and damage of the bushes was less than 5%.