Never fertilized and never shall. Cut only as needed, and it's patchwork as I try to preserve blooming wildflowers. I have both an artesian well and property by a stream. A whole ecosystem including human, lives downstream.The rewards of minimal invasiveness: A variety of grasses, wildflowers, leopard frogs, snakes, dragon flies, fireflies, brook trout... far more lively a landscape than the chemically shepherded, monochrome green of the typical lawn squire. There are many passing by diverse, nature friendly yard spaces who will tip their caps as opposed to laughing. 50 years from now-- hopefully sooner-- the Round-Up mentality of the typical lawn squire will be seen in the same self-destructive light as we now see smoking. (Oh, and many weeds, not least the dandelion are both nutritious and therapeutic.)