haha I like the premise of this. Poor Ralph.
Nothing felt more satisfying than seeing a triple cut animation on cutting the larger grasses. You go Ralph, rock that WeedWhacker like a Superstar!
I jumped on downloading this because the screenshot reminded me so much of one of the very first computer games I've ever played (with a lawnmower!) and in the end, got myself a charming little game that was a lot of fun to play!
Couple of tiny little things I noticed though, when Ralph is talking to his mom in the intro one of the words is cut off in this sentence:
Oh boy! Tonight is the beach festival! I can't [wait] to see all the smoking babes that'll stop by!
And I don't remember the level number, but the House of Dust one. The pink dusty patches have a passability error and I can stand on the side of the house because of it. Now maybe this isn't an error and this house has just got some CRAZY dust--I'd actually be amused highly if that were the case.
Anyway, I took a screenshot of the level just in case I wasn't able to describe well enough which one it was:
http://fc07.deviantart.net/fs71/f/2012/210/c/1/lawn_by_makio_kuta-d59157q.png
All in all, cute game! Good luck in the contest!