Herbicide and bluebonnets

[Ruark]

Well, CRAP. I need to spray my pastures NOW, I mean in the coming few days, to kill some emerging (1"-6") broomweed and ragweed. I've noticed some areas - a total of maybe 2 acres - of thick bluebonnets just getting ready to blossom. So I guess it'll kill them, too, right? :(

 

[novatech]

Yep. Deader than a door nail. It will get the clover too, if you have any. You can wait a bit until after they go to seed but you will have to go to a higher strength. I don't mind losing a few bluebonnets but sure hate to kill clover.
On another note I heard it said many time that bluebonnets only grow on poor soil. Don't now that to be true though. Also heard that ragweed is a sign of low phosphorus.