👉 The term "underspore" is a specific type of soil structure that is found in certain types of plants. It refers to the layer of soil below the root system, which acts as a barrier between the plant's roots and the surrounding environment. The underspores are typically large, dark brown or black particles that can be up to 10-20 cm thick. They help protect the roots from excessive water loss and provide a protective covering for the plant's leaves and stems.
