My Soil According to the Natural Resources Conservation Service

Yes! So I’ve signed up to become a Master Gardener. My first night, I plugged the address into Siri and she took me about 15 miles out of my way on a very dark and rainy night. I was almost half an hour late for class, totally stressed and embarrassed, but I made it.

Turns out being a Master Gardener is much more of a “Thing” than taking a class to learn about gardening. The instructor, who is the head of the Sumner County Extension Office told us that we were an extension of him. That our mission was to spread the word of gardening in Sumner County. The certification requires over 40 hours of classroom instruction,  at least 40 hours of volunteer time and 8 hours of Continuing Education every year.

I’m not sure if this is standard operation procedures for all instructors, but ours, Bob Ary, has told us that his goal is that we become an adhesive group and remain as a unit even after our classwork and year of volunteering is over. I like the idea! We’ll see…

First night’s class was about “Soils.” Bob showed us how to find the soil characteristics of our home address. This is mine. Not sure what any of this means, but I’m sure I’ll find out!

Sumner County, Tennessee

HrB—Harpeth-Urban land complex, 2 to 8 percent slopes

Map Unit Setting

  • National map unit symbol: kqsx
  • Elevation: 700 to 1,300 feet
  • Mean annual precipitation: 48 inches
  • Mean annual air temperature: 57 degrees F
  • Frost-free period: 190 to 205 days
  • Farmland classification: Not prime farmland

Map Unit Composition

  • Harpeth and similar soils: 55 percent
  • Urban land: 35 percent
  • Minor components: 10 percent
  • Estimates are based on observations, descriptions, and transects of the mapunit.

Description of Harpeth

  • Landform: Stream terraces
  • Landform position (three-dimensional): Riser
  • Parent material: Loess or loamy alluvium over clayey residuum weathered from limestone
Typical profile
  • H1 – 0 to 7 inches: silt loam
  • H2 – 7 to 35 inches: silt loam
  • H3 – 35 to 60 inches: clay loam
Properties and qualities
  • Slope: 2 to 8 percent
  • Depth to restrictive feature: More than 80 inches
  • Natural drainage class: Well drained
  • Capacity of the most limiting layer to transmit water (Ksat):Moderately high to high (0.60 to 2.00 in/hr)
  • Depth to water table: More than 80 inches
  • Frequency of flooding: None
  • Frequency of ponding: None
  • Available water storage in profile: High (about 10.2 inches)
Interpretive groups
  • Land capability classification (irrigated): None specified
  • Land capability classification (nonirrigated): 3e
  • Hydrologic Soil Group: B
  • Hydric soil rating: No

Minor Components

Minor components
  • Percent of map unit: 10 percent
  • Hydric soil rating: No