what is this thingamajig?
A while ago, I saw someone stick a long (about 2-3 feet) stick into the soil. Along the side of the stick are little notches that catch soil when he pulled it out. By looking at the soil caught in each notch, he can tell what the soil is like at different depth. Does anyone know what that stick is? I've looked at the garden centers and catalogues, but couldn't find anything like it. Many thanks!