This study was carried out in Laelay and Tahtay Maichew districts. Objectives of the study werernto: identify herbaceous flowering plant species found in the study area, to identify communityrntypes of the vegetation of the study area, to document the ethnobotanical importance of wildrngrasses and to sample wild grass hosts of stem borers that can be used as trap plants in the pushpullrnpest management approach. Within 65 sample quadrats, different herbaceous species wererncollected for taxonomic identification using preferential sampling method and coded for anrnanalysis from 1m x 1m sub-quadrats placed within 20m x 20m quadrat. For ethnobotanicalrnimportance of wild grasses data was collected using semi-structured interview, guided field walkrnand direct observation, preference ranking, direct matrix ranking, group discussion and informantrnconsensus. A total of 132 herbaceous flowering plant species of vascular plants belonging to 99rngenera and 34 families were identified. With regards to species number, the most dominant plantrnfamily is Poaceae (34 species), followed by Asteraceae (16 species), Fabaceae (14 species). Fourrncommunity types were also identified at 47.94% to 31.42% similarity levels. With regards tornethnobotanical importance of wild grasses, preference ranking indicated that, the most preferredrngrasses for animal feed are Cynodon dactylon followed by Cynodon aethiopicus, Snowdeniarnpolystathya, Pennisetum villosum and Pennisetum sphacelatum 1st, 2nd, 3rd,4thand 5th respectively.rnWild grass hosts of the stem borers was searched and among the large stemmed wild grassesrnknown from the study area larvae and pupae of Busseola fusca and Sesamia calamistis-stemrnborers of maize and sorghum were found in Pennisetum purpureum.rnKey Phrases: Laelay and Tahtay Maichew districts, floristic composition of herbaceousrnflowering plant species, ethnobotanical importance of wild grasses, wild grass hosts of stem borers