A shell cracking tool is provided. The shell cracking tool has first portion with a sequential arrangement of a threaded portion, a visible trough and a block surface. The second portion of the tool provides shaft dimensioned and adapted to operatively associate with the threaded portion so that an operational end of the shaft compresses a seed in the trough against the block surface. Thereby, the shell cracking tool selectively urges cracks in the shell of a seed that this visible in the trough, to the point where the slightly cracked shell is more likely to germinate as compared to its pre-cracked state.