Wild yeasts live wherever sugar is found, usually on grape skins or in flower nectar. I am thinking about culturing some yeast from flowers.
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This article has some good info and I would try the bee dissections but I doubt I can differentiate a bee's stomach from it's liver...
I plan to use wort as a starter but am unsure how the floral yeast will do as it is clearly adapted to a different growth medium. Time will tell, I will do this when I get DME which won't be for a week or two.