In reading some of the posts here, I decided to add "spring color" and "summer color" (flats) line items to my yearly contracts. I basically took the price of the flat and added an hour of labor per flat. Any body else doing this? How do you estimate? What other services are you adding? (Ie: aeration, overseeding, fertilizing, soil testing, moss suppression, etc). This has been the best tool for my new company!