Don't lose your head, or...

 Late season Sunflowers ofen grow more massive heads of flowers, as if to make a last ditch attempt to insure seeds for next year.  Sometimes their heads are just too big, and ...

 they fall off.  Then, they might get weaker and lean into the traffic lane.

Click on these t get larger views.  They're even more impressive in real life.   Lots of great Sunflower displays around town these days, and the colder weather is welcome - to humans, if not Sunflowers.