Thanks for giving it a try! My original scope for this game was out of control for the amount of time I have in a week. I'd say 10-20% of my planned design reached the final game.
Great suggestions! With more time, I'd definitely change how the seeds work when they hit an occupied tile. For a quick fix, I updated the starting Mana and tweaked the balance of cost and reward for the plants. Hopefully this makes it easier to succeed! RNG still plays a big role. If corrupt seeds manages to hit both sides of the starting land early on, it will make things much more difficult.