Shokubutsu Mahou Cheat de Nonbiri Ryoushu Seikatsu Hajimemasu: Zense no Chishiki o Kushi Shite Nougyou Shitara, Gyakuten Jinsei Hajimatta Ken

The boy Elt, who reincarnated as an aristocrat, was branded as incompetent and was thrown out as a manager of a remote area with zero territories. However, his "plant magic" was the best all-purpose magic for territorial development! As he cultivated by utilizing the magic that produces from crops to buildings and the knowledge of the previous life , the number of territories increased and became lively. Moreover, the territory that should have nothing is actually a treasure trove.