Looks like an ambitious concept for a game jam. It's got a nice, cozy style but it suffers from some issues. For one, a tutorial leading you through the initial setup is definitely needed with this sort of game. Bit by bit I started to better understand what I was doing, but I never quite knew if I was making the right choices, how far I was getting to achieving my goal, or why my heather plants for example were dying. The info the game provides is too minimal. Nitpicky thing: message texts don't disappear on their own (e.g. "not enough nitrogen!"), which causes them to overlap. With some further work this could be a fun, relaxing game.

Interesting game. Unfortunately it's rather complicated and I'm not really sure what's going on here or what I need to do to keep plants alive. A tutorial is necessary here.
Also your controls are inverted for no reason. Scrolling forward moves me back, moving mouse to the left, moves me to the right. This is incontinent.