Last summer I scattered about 3/4lb of bluebonnet seeds that I had left over from the previous year. I'd done it in a slight bit of a "BAH! GET THIS DONE AND OUT OF HERE!" sort of way, and now the bluebonnets are takin' over!
I think I might be breaking personal records of bluebonnet seed harvest this spring. Maybe I'll get 2 lbs? Mysteries abound!