I will be the first to admit I don't tend to my hops like I should and I'm not anexpert. Some of my early hops brown on the edges. I couldn't tell you if its good bad or neither but itdoesnt seem to happen to all of them and I usuallyn get plentyn to harvest. You siad your hops are inpots, do you have enough drainage? They may be drowning since you had a lot of rain and the soil could be saturated. My hops in pots never grew well and I didn't get any cones in the first year. You really need large pots. Some people have recomended rain barrels or garbage cans.