This time of year is considered the best time for tenkara fishing in the mountain streams of Japan. One of the main indicators of this is the Fuji hana (藤花, fuji flower, wisteria japonica). The fuji flower is commonly found near streams in Japan at this time of year, and when it's blooming it's said to be tenkara fishing time. So, I'll call the fuji flower, the tenkara flower. Now we need to find one for tenkara in the US.
The character for the fuji flower (藤) is the same character as Fujioka-san (藤岡), so they joke that's his flower. This is the fish he caught just about an hour earlier:
One morning I was able to get very close to the fuji flowers, they tend to be found a bit high, but a few hours before I was able to I had dunked my camera's lens, a big SLR lens, into the water as I landed a fish. It's what I call my karma neutralizer. I didn't realize it until later, but the picture I took was a bit foggy. Luckily I was able to get back there before the trip was over and take a better picture.