About a decade or so ago, scientists discovered convincing evidence that the smell of rich, compost-filled earth stimulates the production of “feel-good” compounds in human brains. Yes, there is a reason that gardeners are happiest when outside playing in the dirt. Beneficial soil bacteria emit gases that stimulate human brains to boost levels of serotonin and norepinephrine – cheaper than medications and with no potential side-effects!
Of course, even if you aren’t getting your hands dirty every minute in your garden, odds are high you feel better when you’re spending time among fragrant and colorful flowers and nurturing an array of vegetables for your table. However, without good earth, flowers and fruits cannot flourish. Sure, you can try dousing them in chemical fertilizers and spraying them with insecticides, but those plants will never be as healthy as ones grown in good earth.
Very few new home sites are blessed with good earth. Any topsoil that was there was scraped off by bulldozers. Exposed clay was compacted by heavy equipment, leaving “soil” unable to receive rainwater gifts. Instead, water rushes downhill to flood intermittent and permanent streams – too much, too fast, and often filled with polluting fertilizers and other chemicals. It takes effort to rebuild these wounded places. But the return on your efforts to create good earth is critical, not only for the gardens you may want to plant, but for all the native birds, mammals, reptiles, amphibians, insects, fungi, and beneficial bacteria that rely on good earth.
The key, of course, is to add as much organic material as you can to your soil. If you don’t have a compost pile, create one. If you are blessed to have a yard with sizable trees and shrubs, cherish every deciduous leaf that falls. Southeastern woodlands left to their own devices build up layers of decomposing leaves that feed every creature in the forest, directly or indirectly. Leaving fallen leaves beneath your trees and shrubs will help heal your damaged soil, rebuilding good earth.
We know that all soils are not created equally. Certain parts of our country are known to be ideal farmlands. Certain parts of my state – North Carolina – are known for their rich farm soils. But all that good earth is disappearing at alarming rates – about a million acres/year – lost forever, replaced by subdivisions and strip malls. Such good earth cannot be recovered. Greed-driven “development” is starving the future of our children and grandchildren.
A number of nonprofit conservation organizations are trying to slow this destruction of good earth by offering farm owners ways to preserve their lands in perpetuity, offering alternatives to the siren song of corporations that only view land as a vehicle for profit, blind to the blessings of good earth. I am grateful for the efforts of these groups, grateful that they understand the blessings of good earth. When you are contemplating your year-end charitable donations during this holiday season, I encourage you to support a land trust near you that is working to preserve local farmlands. There will not be enough food to feed the hungry if the farmlands that grow the food disappear.
This American Thanksgiving, I am grateful for the good earth that nurtures our brain chemistry, our stomachs, and our spirits.