I have a block of land in Central Otago. 8.5ha. Covered in the stuff. Some really thick patches. I don't mind it as there is certainly plenty for the bees. The neighbours blocks are covered in it too. There was a blue haze last summer and kept the bees happy. Though the honey is a bit startling, flavourwise, when fresh. I want to irrigate a ha or two of the block so I can run a few sheep eventually. Would prefer a bit less of this and more subterranean clover. So I want to control it. Don't mind spot spraying the big ones with as inoffensive herbicide as I can find before it starts flowering.
I know its going to take me years to get it under control but it is going to be a while before we get to live there permanently so no rush.