Growing up in the Midwest, I came to believe that certain plants should only grow to certain sizes. Then I moved to the Bay Area, where a freeze is much more rare than an earthquake, and found out that geraniums can grow over 6-ft. tall and annuals can become massive monsters.
This is the latest plant that seems to have been blessed with enormous growing potential. I saw it in front of a school in Oakland, and had to take a picture.
And yes, that's a poinsettia!