I enjoyed this game, you could say it really blew me away :D
The idea was fantastic. The game mechanics were great, but maybe we needed a small grid on the screen showing the squares because it was a little difficult seeing the line where the fan's wind will be going.
I liked the art style and the sound. i feel like the game could have used some calm background music, but the ambient background sound was good enough. The game felt a little short, but that is of course due to the time limit we had.
I only found a couple of minor bugs, you can select multiple fans from the top left and you can add multiple fans to the same square. And sometimes the trees don't release their pollen (but it is fixed when i rotate the fan 4 times back to the same position).
Overall, a very fun game and with a few more challenging levels could be even better. Good luck in the game jam.