Planting yarrow and milkweed is great for native bees, at least where I live.
I suspect this would not boost native mason bees to the same extent. Each mason bee makes about 25 cocoons for her eggs in a season, while a honey bee queen can lay 200k, and the remaining work goes to the rest of the hive.
Or do you mean putting out the supplement for feral honey bee hives?





Maybe someone will engineer their demise intentionally. Never know when it could be really needed and for what.
Or CRISPR a food to create an army of hunter killer bees. 🙌