Do you have an established warm season lawn like Bermuda, but wish you could get that pretty green color through the winter months? With some perseverance on the front AND back end, you can. Check out this publication that guides homeowners and sports turf managers on overseeding Bermudagrass with Perennial Ryegrass.
You may also need to reference the second publication on REMOVING Perennial Ryegrass from Bermudagrass!
Published by: University of TN Extension
Date Published: March 2008
Link to Resource: https://extension.tennessee.edu/publications/Documents/W161-J.pdf
Published by: University of TN Extension
Date Published: November 2010
Link to Resource: https://extension.tennessee.edu/publications/Documents/W239.pdf