It probably hasn't been growing (vege growth) for a while, so if it was fine so far no reason to not be patient.
pistils look long, which means the calyxes have a lot of plumping to do. Those buds have a ways, yet. Maybe, something in the environment caused early pistil death and that's why so much has turned rust-colored. Excess wind, foliar sprays etc... could give a false positive.. .go by the calyxes.. that's all that matters.