Like others have said, there's some visual feedback that makes this game tricky to play.
I spent a while trying to get wood out of trees with the axe. I'm not really sure how I'm meant to get enough wood to build these planter boxes. I built a small one with some wood I got from the broken crates, but I'm not too sure what a seed looks like. I managed to water the box, but that's about as far as I got... it seemed like the area I was in was all walled off.
Definitely a tricky game to try make in a weekend!