Is this a Texas thing?

The school that I work at celebrated homecoming this week and with it the parade of homecoming mums and garters.  A student asked me out of the blue if this was a Texas thing or did every high school student wear mums and garters for homecoming?  My first reaction was to say "yes", but then I realized I might not really know.  So, is this a Texas thing?
We've had these traditions for as long as I can remember, but the mums and garters have gotten larger with time.  When I was in high school our mums were smaller than the boy's garters are today, and they were even smaller when my dad was in high school :)
Well, either way, it is always fun to see everyone's adornments and the jingling of the bells as the kids make their way down the hallway.