I really like the game and commented on the old section.
But there is a real problem: Once your tree began to die, there is no turnaround manageable. If you growed to much, SAP is empty and first leaves were gone, production goes down while consumption stays high. There has to be a way to fix the problem - either by letting branches die to reduce the consumption manually, or automatically by reducing the consumption when the leaves die.
Now I have some sceleton trees on the map, and there is no way to restart the level.