Just know where the bees are getting the pollen............the following is an article on it.
With regard to toxic honey, there is also a long history. One of the
earliest references comes from the writings of the Greek Xenophon
(approx. 400 B.C.) who described the effects of soldiers eating a toxic
honey. The incident occurred in what is now Turkey. The soldiers were
returning to Greece from a campaign in the Persian Empire, encountered the
hives and robbed them of their honey. Xenophon indicated that the
soldiers who consumed the honey lost thier senses, and were inflicted with
"vomiting and purging". A later reference indicates that the honey of
that region was also used against soldiers of the Roman army under
Pompey. The Heptakometes left jars of the honey along the roadside as a
"tribute" to some of the advancing army. The soldiers who ate the honey
lost their senses and were easily defeated by the Heptakometes. The
source of this toxic honey in the Middle East is probably Rhondodendron
ponticum, although R. luteum could also be a source. A good reference to
the toxic honey of this region is Sutlupinar et al. 1993. Poisoning by
toxic honey in Turkey, Arch. Toxicol. 67:148-150.
There are several references to toxic honeys in the US. The earliest
record of which I am aware dates back to Philadelphia in 1790, when a
child died from eating honey. There are also references from the Civil
War and from the 1940's and 1960's. The most recent report is the one we
found here in Virginia. A beekeeper became violently ill after comsuming
some honey from his hives and ended up spending 6 days in the local
hospital. We were contacted about the possibility of the honey causing
the problems and subsequently analyzed the honey. We found two
grayanotoxins (primarily nerve toxins that lead to a prolonged
depolarization of the nerve) in the honey in sufficient levels to cause
very serious medical problems. Based on the time of year, the area in
which the honey was made, and the toxins, we believe the source was Kalmia
latifolia (Mountain laurel). This type of toxic honey is not common but
seems to be reported once about every 20 or 30 years.
There are a number of other plants that produce nectars with various
toxins. Some of these include Yellow jassamine, tansy ragwort, and
Egyptian henbane. If you would like more infromation on plants and
specific toxins, please let me know. Hope this answers some of your
questions.
Bibliography:
Rick Fell
Professor
Department of Entomology
Virginia Tech
Blacksburg,Virginia 24061
Tel. (540) 231-7207
e-mail:
rfell@vt.eduNot that it is a common thing, but......