Earth Day

Photo: Travis Gray

What you can do: The greener green thumb

Choose to plant only from seed (it'll cut out the energy-wasting time spent shipping plants). On top of that, choose "open pollinators," which are self- or wind-pollinating. Some other garden tips: Decrease the grassy area on your lawn to save lawn mowing (replace it with mulched or planted areas), and buy plants native to Knoxville.