Nice small bug-free game, pun intended ;). I will echo other comments. 

• I couldn't really see the theme in play without anything growing or recovering 
• Your design choices have limited this game's potential. By having the goal immobile (makes sense for a plant) the optimal strategy will always be to stay close by jumping up and down (like Cedar Cat Studios mentioned) which gets boring fast. Compare this with Cedar Cat Studios's game -  their plants moved and you had to collect things as well, which forces you to move around and switch between offense and defense - greatly increasing dynamism.  Alternatively, I could see this game concept as top-down 2D and you were a rolling spike ball that had to "charge" enemies at speed to kill them - anything to force you to move around
• The Art is nice, but consider even simple things could have made it pop even more, such as having the face change between spikes and and spikes out

Nice Game. As others have said the graphics are really great. The game is fun and easy to play. To implement the theme of recovery a bit better I would have found it better to start with a certain number of plants and after a certain time where the plants were successfully defended new grow or at least the 3 there are, regrow when one was destroyed. Just as an idea, if you want to work on the game after the jam ;-) But otherwise well done.

• Use of Theme - 2
  • Apart from the little bit of story in the page of the game i couldn't tell how the theme is incorporated in the game.
• Gameplay - 2
  • There isn't much to comment about the gameplay. What is implemented is well done but it's really simple for a month long game jam imo. Also i don't think the main mechanic lends itself well to a game like this with infinite scoring. But i think it would work well with a side scrolling level design maybe.
• Creativity - 3
  • The main mechanic is quite creative but other than that i think it lacks a bit.
• Art - 5
  • Perhaps what saves this game. The cute art makes this game a pleaseant experience and may keep the players engaged more than the gameplay itself.
• Sound - 2
  • I don't think the BGM suited the game. It was like an epic sounding track when the game is really cute.

This was a really cute and fun game! My submission also focuses around protecting plants from bugs haha so looks like we had a similar idea for recovery. I did find that I could cheese the game a bit by spamming the space bar above the first plant and stayed there forever killing the bugs. Other than that, this was a lot of fun!