The most I can see by 'growing crops' is planting different plants, waiting, then picking them.
If there is any plant tending involved I think it would be a tedious, wasted mechanic for the game.
Who would play a TES game and choose not to fight but be a farmer?? I can see sneaking past monsters, using cunning and what not but ...... a farmer? I can go out in my backyard and grow some crops in real life. Plus, since TES is an ACTION rpg, I doubt very seriously farming will be top of the list for new implementations.
Plenty of people want a more realistic economy and the ability to be a halfway legitimate merchant.
And I feel that TES should be an RPG with action (even heavy) elements. There are too many flat out action-rpg's.
Besides, if the mechanic is being able to plant a plant, and it is simple enough, I think it would be good.