Blackthorn is regarded as a wood of
great power and a keeper of secrets due to its near-impenetrable
thorns. It is also considered to have a negative side which was
historically used for "binding and blasting". A blasting rod is a
Blackthorn wand with fixed thorns on the end, traditionally used to cause harm to
others through negative magick although in more modern times, it is
well-suited to reversing harmful magick spells, casting strong
protection spells or reflecting ill will.
Traditionally, a blasting rod was
longer than a regular wand and considered to be very powerful.
More information about Blackthorn can be
found on the OBOD website
here. Some of the information above was used from that page with
the kind permission of the author, Susa Morgan Black.