Hercules' Club may refer to: Hercules' Club (amulet), a Roman and Migration era artefact type. Plants Aralia spinosa (also called angelica tree, devil's walking stick, prickly ash) Zanthoxylum clava-herculis (also called pepperwood, Southern prickly ash) Rock formation Hercules' Club or Hercules' Bludgeon, a 25-metre-high limestone column at Ojców National Park, Poland.