The Potato Patch allows you to grow potatoes to be used as food for you empire. The patch can only be used in orbits 3 and 4 (it's goldilox zone). The higher the level of the patch the more food it produces.
All plants need a source of phosphorus to photosynthesize their food. Therefore you need a good source of gypsum, sulfur, or monazite for plants to thrive.
Keywords: Food Buildings