Hello Philip the herbalist,
I would lay off the datura leaf & belladonna (yourself) for a couple days
and then consider the bee varroa problem.
In my opinion you are doing needless medicating of the bees. You might try
one herb or method at a time and monitor varroa drop.
By giving all the meds you list how will you ever know what (if anything)
ever worked?
The tobacco smoke will cause varroa to drop as will leaves from the orange
tree. Maybe the datura will also. I would not get downwind from a smoker
full of datura leaves.
As far as your remedies for PMS ( name given to viruses in hives with heavy
varroa infestations) I do not see those even curing viruses in humans.
Viruses have to run their courses.
Good luck with your project and keep the list posted.
Keep in mind that unlike the other creatures you listed a honeybee only
lives about six weeks in summer.
Also
Varroa & ticks are very similar (same family) .
You need a way to kill the varroa AND NOT KILL THE BEE. Free the hive of
varroa and the virus problems will go away.
Bob
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