Why people compare these two
Homeowners often reach this page before they have fully accepted that a hot-climate drought lawn may need a warm-season answer. Bluegrass is the familiar starting point. Bermuda is the climate-driven alternative.
Where bluegrass still attracts people
Bluegrass still attracts buyers who want a classic cool-season look and who are not ready to give up that lawn identity even if drought pressure is rising.
Where bermuda usually wins
Once the yard is mostly full sun, summers are long and hot, and irrigation expectations need to come down, bermuda usually becomes the more realistic page to build around.
Best next pages
Move from here into the bermuda guide if the lawn is clearly hot-climate, or into the tall-fescue comparison if you are still trying to stay cool-season.