Mow for less (Don't you hate puns?)
Chop Chop (or Chop Chop Chop Chop if you work fast)
Of course, and you need a slogan too. How about, "Nothing better than a tractor and some grass." Well, maybe that sends the wrong message. Perhaps, "Cutting one for you?" No, that's not right either. "Chop to order?" OK, maybe you get the wrong kind of business with that one. I like, "Hogging to please." myself, but others may find that a bit sugestive.
Cliff