Factorio Forums

There should be only one "artificial soil" and "overgrowth" soil each, where trees, jellynuts and yumakos can grow on - in the proper "biome". An artificial soil will automatically turn to yumako soil on yumako land, landfill will store the yumako land flag too. When replacing, you'll get neutral soil resp. landfill back again. "Overgrowth" soil will allow to grow everything whereever it could be placed, but might "remember" whether yumakos or jellynuts could have grown there before. It simply might also never be replaced or removed again, not even by landfill.

Please make your idea clear (and maybe use the provided template)