September gold fills my garden at this time of the year. I have whole fields of goldenrod. It's a good thing that goldenrod is not responsible for allergies. "One of the most colorful plants we see blooming in roadside ditches and gardens in late summer is goldenrod (Solidago sp.). Hay fever symptoms seem to be worse when it is in bloom so it often accused of causing hay fever. One look at goldenrod and a little logical thinking…