I just got a sample of comb yesterday from my top bar hive. It was very dark, almost as dark as coffee, and strong. Good tasting, delicious. It is my first year and I will harvest one large comb next week when it is capped over. I live near Pgh, Pa with lots and lots of japonese knotweed, in a suburban area. I don't see lots of goldenrod around here, but there may be. Is this consistent with what anyone knows of living near this invasive plant?