Interesting interpretation of the theme. The graphics are really cute and the visual effects (shaders?) you implemented looks super cool.
The music sounds a bit too epic for the gardening theme thouch. What would have been awesome (I don't think it is the case) would have been implementing dynamic music that adapt to the balance or imbalance of the world (too hot changes the theme etc), but that seems out of the scope of a jam.
The daily objectives don't seem to be reset between days (I hit 'plant 20 seeds' immediately on day 2), and I would have liked a fast forward button to advance quickly when I completed all the objective in a day.
Thank you for sharing your source code, your knowledge of Phaser seems pretty solid!