The current regrowing plants never seem to die unless abused/neglected. What about having regrowing plants have a lifespan of 3 harvests before 'withering' which will need to have them removed, the soil tilled and something new planted.
The second catch could be, a regrowing plant cannot be planted on a plot where a plant recently withered at. This means after harvesting corn 3 times, the farmer will have to grow a cycle of turnips or something similar.
Just a thought.
Crop Life Cycle
Crop Life Cycle
The elements are slaves to no being. One must learn to ask for their aid, the elements offer power to the humble. This is why no one is truly a master yet everyone is a student..
~The Apprentice of the Elements
~The Apprentice of the Elements