Zanthoxylum clava-herculis (commonly called Hercules’ club, Hercules-club, pepperwood, or southern prickly ash) is a spiny tree or shrub native to the south-eastern United States. It grows to 10–17 m tall and has distinctive spined thick, corky lumps 2–3 cm long on the bark.
This species is quite widely used in herbal medicine, it has the same properties as Z. americanum, but is said to be more active. All parts of the plant, but especially the bark and roots, contain the aromatic bitter oil xanthoxylin. This has a number of applications in medicine.
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Cut herbs are herbs which have been harvested and then cut into smaller pieces, suitable for further processing. Cut herbs like Zanthoxylum clava herculis cortex / Prickly Ash Bark Cut can be used to produce tinctures or fluid extracts. They can also be used in herbal teas and infusions.