Another mouse game! I like the idea of taking agency over the season. I don't think I entirely understand all of the mechanics yet, but it's very self-reinforcing and quite expandable.
One thing that kept surprising me was the way that the trees would sort-of subsume a gap. I'm not sure what was triggering that. Also, it took me a bit to figure out that I needed to click next to the already-fall trees to spread it further; that took some experimentation.