So many backyards in our neighborhood are covered with grass and non-native plants which are unfriendly to wildlife. Animals can only utilize certain plants as food and some are unusable or even poisonous. Grass is an environmental disaster. It requires a prodigious amount of water which in drought regions is irreplaceable. Pesticides are generally used it which poison the ecosystem and drain off into our rivers and oceans. People then mow it and put the clippings in plastic bags which are hauled away (using fossil fuels) to the landfill. What a tragedy!