This is a fantastic idea which fits the theme perfectly and the visuals are great. Having 4 types of weapons is a super idea and encourages different playstyles.
I guess the big thing which is missing from this game is some basic info on how to play because when I started, I had no idea what to do.
Sound design could need some more work: the sound of the weapons is not playing when you spam the mouse and it would be cool to have a little soundtrack while destroying tomatoes. :-D
In terms of gameplay balance, I think you should increase spawning time when the player gets its first weapon. I quickly found myself overpowered compared to the rate of arrival of those poor carrots and tomatoes.
Keep up the good work! ;-)