In Northern California, Yellow star Thistle use to be a really big nectar source.
Maybe it still is for you. For Us its a bust. We used to get barrels of honey- really good honey-popular with the public. We have had to seek other nectar sources as some locations have become worthless after blackberry flowers are done. Seems like it cut into the bottom line... then again we are in a drought too...so late summer and fall is bone dry with no nectar.
I have heard from several sources that the state or some govt entity released two different wevils into the environment with the expressed purpose to bore into the seed heads and prevent spread of this "Invasive Non Native" These sorts of releases seem really short sighted and while it may serve to asuage the grazing concerns of some ranchers; its bad for bee keepers...IMO. Any one have more info?
Why are they in continuing to release new invasive species if their goal is to stamp out non natives. After the thistle is gone what will the wevils go after then ?maybe the beloved ca. poppy....?
Perhaps we should tread lightly on this subject after all humans are did not originally evolve in the new world. People...The ultimate invasive species...HMMMM