It’s ragweed not goldenrod that’s aggravating your allergies: Goldenrod vs. Ragweed: They’re NOT the Same Plant!
and Meadow Blazing Star:
One of my gardening goals is to have flowers in bloom from May through October. Right now we don’t have much which blooms in fall. Plan is to plant some Showy Goldenrod and New England Asters to remedy that. (Follow the links and you’ll note that Prairie Moon’s seed packets are very affordable.)