This is fireweed.
It is the upside down hourglass of Alaska's summer.
The flowers start blooming at the bottom of the stalk and work their way up.
Supposedly, the last flowers blooming at the top of the stalk mark the end of summer.
Unfortunately, this picture was taken a week or two ago. The blooms keep inching their way upward.
Say it ain't so. I'm not ready yet.