Daniel Davidson, with Alan Ivey Landscape says:

  1. Monkey grass: I normally set the height of the push mower at the highest setting.
  2. Fountain grass: depends on height and type. Contact your landscape professional for more info.
  3. Tall grass: I probably cut back 1′ to 2′ from base of plant.
  4. Smaller grass:  probably 8” to 16” from base of plant.

It’s more of a gut feeling when cutting it back if that makes any sense. If you have any questions just let me know:

Alan Ivey Landscape

Daniel Alan Davidson