Very innovative. I love farming games, and the idea of a farm game where your own vegetables rise up and attack you is very cool.
Some more "game juice" would have been nice. For one thing, there was no audio. Even some rudimentary audio really helps with immersion. Also, I would have liked more visual feedback when the player is struck, e.g., getting pushed back. And a visible onscreen health meter is a must.
Finally, note that I did get this one odd bug: one pumpkin stopped moving and I couldn't defeat it no matter how many times I hit it. The other pumpkins onscreen behaved as normal.