You can use Bermuda seed such as Pennington Bermudagrass Blend in your lawn if you are ok with the possibility of the Bermuda taking over the area. Bermuda can be very difficult to control once it is established, so we do not recommend using it unless you know that the desirable grass you most want. Bermudagrass seeds germinate best in full sun when daily temperatures average 70 – 90 degrees.