Very interesting entry! Reminded a LOT about Atomicrops. The art is very nice and the audio is just nice!
However, I did not enjoy the spinning mechanic. If I had a little more granular control over how I was able to shoot it probably would have been nicer but as it stands if I hold down click I just instantly shoot out all of my potatoes, and trying to hit a target while also achieving the spin in order to even allow me to shoot in the first place is more annoying than fun to me. I think I'd have enjoyed it more if spinning was a toggle and I could turn on and off when I am spinning, so that I spin at a constant rate, and for the spud cannon to have some kind of internal cooldown between shots so I don't accidentally unload my entire round into one enemy. Lastly, you can delete your own seeds if by mistake you plant two plants on the same spot; one will be planted and the other dissapears.