This data set provides lists of plant species observed in 2017 at Fernald Preserve in southwest Ohio, USA using two different survey methods. “Tier1_species.txt” provides a list of plant species observed in a cursory walk-through survey at 8 restored grassland sites. “Tier3_3pecies.txt” provides a list of plant species observed in 44 circular plots (18.5 ft radius or 0.025 acres each) within the 8 restored sites. "Grassland_plot_coordinates.txt" provides plot name, and latitude and longitude coordinates in decimal degrees for each plot center.