May is a great time to begin spreading compost on your turf grass to improve your soil. The process will help you improve your soil and get thick healthy turf grass. You can combine this with core aeration to allow the soil to breath and get some of the compost down in the root zone. After you have spread compost and aerated remember to set you mower deck to cut your grass at least 3.5″ tall. This will allow the healthy grass to grow up, shade out and crowd out the weeds and make you lawn look better.
Happy Cinco De Mayo.