If by "Nature's Gifts" you mean trees, you can set growing zones to plant trees, which will be harvested automatically by your farmer once they are ready. Same applies to berries. But if you're talking about someone who goes out of your home area searching for random berry bushes and things like that, I'm afraid that I don't know any mods that might help. You could always just set the "Harvest" order on the entire map, of course.