Chances are slim they will stay put on any given acre. To bees it seems there is always some greener grass beyond the immediate surroundings.
Not saying they won't hit on it or derive any value, just that bees like variety, even when hitting on the the same plant (there may be a golden field up the way from you that is more attractive for whatever reasons the bees decide. Besides, ONE acre isn't that much.....not to a bee who lovingly travels far and wide. We are currently surrounded by many acres of Goldenrod, just ask my wife..between sneezing.....when it blooms.....it blooms "everywhere" it wasn't restricted/poisoned or planted with something else.
That all said, keeping an eye out for active foraging in a field of Goldenrod is great entertainment :)