A planting machine for forming a trench for planting seeds and/or fertilizer in a ground surface, including a frame that supports a planting assembly having a cutting tool and a gauge that sets the height of the cutting tool so as to determine a depth of the trench formed by the tool, wherein the assembly includes a linkage coupled between the frame to the gauge and an actuator to allow for remote adjustment of the linkage, in order to vary a planting depth of the trench.
