The implementation of the theme was spot on, i really loved the moment where I realized that I play as the plantlife that overgrows the remains of the old civilazation. A bit of a tutorial or a clearer naming convention would be good. I had almost finished the game when I placed my first default tree and I realized that it was the only money generating tree of the game.
It was certantly a lot more fun when I noticed that it wasnt just about waiting.
The graphics really where amazing and totaly carried me into the world.
The music was great and I loved that there was some variation but I think you could make it hit a bit earlier. (I think it was day 9 when I first heard something else than the first loop, might have missed it earlier tho.)
For my personal taste I would have prefered a little less vibrato in the melody as it gave the theme something really uneven and unsettiling which didnt fit the game for me
Gameplay wise i think the enemys could be a little more threatening. There are more of a nuisance right now.
The ending was also quit overwhelming.
I name a lot of negative feedback here, but that really just because I think the game is already great and still has a lot of potential.
I would love to see where this is going if you decide to continue developing after the jam.