Now that is interesting @bigB . The hops are a natural anti-bacterial which is why the British put them in their Pale Ales when they sent the beer around South Africa on the way to India - hence India Pale Ale or IPA. I am kind of wondering what might have been seeing how I took the last of my hops out last year.
I had ten varieties, mostly the ‘C’ hops and I did have one strain that was supposed to be the oldest hop in America. It came from a farm in New York - Cluster. The farm had been in the family for generations and the old timer, Bill, said they couldn’t kill it, dig up those rhizome’s, and the pestilence and disease didn’t effect it either.
I never saw too many bees around my hops, but maybe by the wafting of the pollen from the lupilin gland, some of those properties have in turn helped keep the disease and the mite population down. Thanks for the info.
Keep me up to date on what you find out this year.
I have added a list of plants that have some sort of oxalis in them. Granted the majority of the chemical is usually found in the leaf, but there is some trace in the pollen as well. How much gets entered into the hive depends on how much the bees would be foraging from local sources close to the hives. That is why I am looking to gather information on the plants, the quantity within the hives range and the amount of infestation.
Here are a couple of cites with lists of plants with oxalic acid in them.