Western Flower Thrips, Frankliniella occidentalis (Pergande), is one of important and key pest in ornamental crops greenhouse with a wide host rang and wide distribution around the world. This study was carried out in order to collection this polyphagous pest associated with some ornamental plants in greenhouse including sunflower, zinnia, marigold, oleander, dahlia, snapdragon and Heartleaf ice plant in Hamedan area, during spring 2014. In this study, 11 flowers as replication of each ornamental flower at same condition were randomly collected and packed in paper pocket separately. The samples were stored in refrigerator (4 °C) for about 8 hours. The adult WFT were counted separately. Results showed that there was significant difference between the ornamental plants in attraction on WFT. Maximum and minimum number of WTF were found on sunflower and dahlia (168.27±9.57a and 185±22.87a in average) and snapdragon(0.54±0.20e in average), respectively. The sunflower and dahlia flowers with high value and quality pollensas supplementary food showed the highest host-palatability and it is necessary to consider in integrated pest management (IPM) plans. It seems that the flower pollens can be used as a food source for mass rearing WFT in scientific and research studies.
