Beekeeping is a long-standing practice in the rural communities of Ethiopia but beekeepers lack flora calendar. The study was conducted to identify and develop a floral calendar in four representative districts of the East Wollega zone of Oromia (Diga, Gida Ayana, Gobu Sayo, and Wayu Tuka). For the interview, a total of 159 beekeepers were selected by the district experts and from each district, honey samples were collected and honey pollen analysis was done to determine the botanical composition of honey. Based on the interview with beekeepers, honey pollen analysis, pollen load collection, and visual observations 53 plant species were identified belong to 26 families. Based on the record of the flowering period of the majority of honey bee flora, which bloom from September to November and December to February in all districts according to the flowering calendar, beekeepers can establish apiary sites, install beehives, divide colonies, add supers, use swarm control measures, and harvest honey. It was also indicated that some of the honey bee flora species identified by the respondent were similar to honey bee plants identified through honey pollen analysis.

Key words: Pollen, honey bee, floral calendar, absconding, honey flow.