I was leaving my pumpkin farm produced for a period on my computer, that is, I allowed the days inside Minecraft to pass so I had items to trade with the villagers. The problem is that I put a cross on the top of my house and let the blocks oxidize: this took days in the game. On top of the cross is a lightning rod, could it be the cause of the problem? Was there something you could do to make the blocks turn green forever?