September blooms are golden:
'Lemon Drop' Dwarf Golden Rod zones 5-8
I know what your thinking.
Yes Golden Rod! With it’s sturdy yellow plumes of late summer and fall flowers, Golden Rod can be a dazzling addition to a large planting, especially a meadow planting or a wildflower garden.
Allergy suffers are rolling their eyes, but unless you put your nose right into the Golden Rod blooms, most likely you won't be affected by its pollen. Golden Rod has heavy, almost sticky pollen, which needs to be carried by bees, butterflies and other pollinators.
What you are probably allergic to is Rag Weed, which blooms at the same time. Rag Weed has a green flower and very light pollen that is carried far and wide by the wind.