Abstract: A trailer mounted soil sampler including one or more soil sampling assemblies mounted thereon. Each of the soil sampler assemblies being selectively pivotally movable between horizontally disposed and vertically disposed positions. Each of the soil sampling assemblies includes an elongated hollow soil probe which is driven into the ground to collect a soil sample therein. The soil sampler includes a soil cleaning and oiler mechanism. The soil sampler also includes a trash cleaner for cleaning trash from the area where the soil probe is to be driven into the ground. Further, the soil sampler includes a soil sample collection apparatus for collecting the soil samples in bags.