The type of vegetation used is always dependent on the climate conditions of the area where the structure is installed. As in any garden, if you use plants native to the region, in many cases you can have zero or very low maintenance. What must be taken into account is that when you build an earth-sheltered house, the surface of the earth tends to revert back to its natural state eventually. You can decide to modify or improve these conditions with, for example, with improved soils, watering systems, and ornamental plants, or anything else that is feasible in your area. Low maintenance ground covering plants are a good choice. We provide some very comprehensive information about what plants are compatible and easy to maintain in rooftop gardens according to your geographical area.