It's pretty fun.
I managed to find a bug that let me cut nearly 20000 grass blades before the game started to lag too much.
how did you find it
If you press space while playing, the game doesn't fully reset. Essentially you start a new game with twice as much grass. The only limit to this is how much grass the game can handle before it's unplayable.
I could fix it but I'd rather leave it in as almost like a cheat key