Since a soil's CEC comes from the clay and organic matter present, it can be estimated from soil texture and color. Table 1 lists some soil groups based on color and texture, representative soil ...

It’s true: The blossoms of certain varieties of hydrangeas change color based on soil pH, offering valuable insight into soil composition and what’s going on underground. Gardeners can use ...

With so much color and artistry imprinted on the soil—the ancient paint, alas, adheres to dirt more readily than to lacquer—Chinese preservationists are now trying to preserve the earth itself.