Mulch is the No. 1 secret to low maintenance gardening. Apply it in a layer 2 to 3 inches thick, and it will help suppress weeds (less weeding for you) and reduce water evaporation from soil (less watering for you). Maintain mulch by applying a fresh layer as needed to maintain that ideal depth. In warm regions, you may need to apply mulch twice a year. In zones with cold winters, an annual mulch should be sufficient.