I normally pull my supers around the first of July. An average year here in Pennsylvania has most of the bloom gone by then. This year we have Sweet clover coming on like gang busters. Probably because the rain has kept us off the fields to harvest. In any event If my fellow beekeepers in Pennsylvania have hives any where near sweat clover either white or yellow. You may want to consider holding off on pulling those spring supers or maybe extract and get them back on. It could Just salvage the mediocre spring harvest we have thus far had.