A few brave students tasted a small amount of soil, another held a handful of soil to her ear, “I can hear the ocean!’ she exclaimed. She was joking. In reality, in a sensory evaluation of soil health, we tend to rely most heavily on our visual and tactile observations. Before we get into what’s good and what’s bad, let’s establish what is.
Soil, dirt’s preferred noun, is that composite beneath our feet. It’s a combination of organic matter (humus), oxygen, water, and minerals. Humus, the organic component of the soil, is a composite itself, made up of decayed plant and animal matter. Oxygen and water facilitate life, allowing for the movement of nutrients. Minerals like sand, silt, and clay define the character of the soil.
As for texture, soils that are overly sandy will feel gritty, silty soils will feel like dry flour, and a too clay-y soil will feel smooth and slippery, especially once exposed to water.
Now, if you’ve smelt, felt, heard, seen, touched, jar tested your soil and you are still curious, UVM’s Soil Lab Test is a good next step. Tests are relatively inexpensive and can be tailored to your garden’s focus. Come back soon for more on soil amendments.