If you’re still maintaining your lawn using chemicals, stop! (Now, wasn’t that easy? Think how much time I just saved you!) The U.S. Environmental Protection Agency estimates that U.S. households use nearly 90 million pounds of herbicides and pesticides on their lawns each year. Those chemicals end up in our groundwater and run off into rivers and oceans. If growing your own food is on your sustainability agenda, you certainly don’t want those poisons ending up on your kitchen table via the vegetables you grow.