Nancy from Oriskany,ny writes
According to the Tenacity product label for New Lawn Establishment: Wait until the newly germinated turf has been mowed two times or four weeks after emergence (whichever is longer) before making a postemergence application. If it is an established lawn, we recommend waiting to mow your lawn 2-3 days after application and 2 days prior to application.
Answer last updated on: 09/01/2014