Around here most field work is contracted out.
Problem with this portion of the site is that it is very specialized and the few people that come here seem to lose interest fast due to the inactivity.
grassmasters, I cant help as I dont know warm season other than to say, it really isnt not a far leap from the work you probably already do...sorry I cant help more..
"What do you mean we canít get rid of those weeds in time? Then go over there and put some fancy signs with Latin names in front of them."