Many are Arctic–alpine species, due to the mountain's height, which allows for cooler temperature at altitude than the surrounding terrain. These plants are believed to have evolved and established themselves just after the glaciers that formed Benbulbin had receded.
The presence of many Arctic-alpine species on Benbulbin can be attributed to its elevated position, where temperatures are lower compared to the surrounding terrain. It is thought that these plants emerged and became established shortly after the glaciers that created Benbulbin began to recede.