The primary aim of the present study is to determine the trends in the vegetation periods of the Aegean Region as well as the changes in the start and end dates of the vegetation period. Likewise, it has revealed the relationship between these trends and the changes in daily average temperatures. The daily average temperature data of 12 meteorology stations selected for this purpose were obtained from the General Directorate of Meteorology. The MannKendal rank correlation coefficient method was used to determine whether there was a statistical significance related to the trends in vegetation periods and the start and end of the vegetation period. Spearman correlation was used to determine the relationship between the changes in both the vegetation periods and the start and end dates of the vegetation period with the average temperatures in the study area. As a result, it was determined that there is an increasing trend in the vegetation periods of the 12 meteorological stations evaluated according to the threshold values of 8°C and 5°C in the Aegean Region. While this increasing trend is statistically significant in some stations, it is not statistically significant in others. It has also been determined that the vegetation period tends to start early, and that this tendency is statistically significant.