Hi Herb/Norma,

I am presuming that your definition of "poison pollen" is one where
material detrimental to the well-being / health of a honey bee or honey
bee colony is present in/on pollen particles.
If so, then, yes, pollen may be poisonous.
Many synthetic compounds have been noted to been present in pollen loads
collected by honey bees.
Toxic consequences on the adult bee/ brood varies depending on which
substance is found, at what concentration, method of product
application, meteorological conditions.
Compounds may be stable for short, medium and long term as stored in the
hive body - again causing different types of problem when relating to
colony regulation.

Recent dialogue has been taking place about levels of the molecule
Imidaclopride present in Sunflowers and Maize pollen and its
consequences on honey bee colonies.
As techniques and science advance - points of reference have been
changing. What has been considered as correct in the past, is now either
no longer held as true or is under investigation.

Regards,
Peter

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