Autumn but not Fall happens in Texas

According to the calendar all four seasons happen here, much like everywhere else.  In actual practice every place has its own twist on the seasons.  The two most obvious regional differences here are that:

 

1)       Spring lasts about three days and those days are not sequential and

2)       The leaves don't fall off of the trees in the "Fall". 

 

Instead they are pushed off of their limbs by the new growth leaves that appear on those three Spring days or they fall off when the temperatures push up past 100.  Our backyard is carpeted under a thick layer of leaves at present.  Even after 14 years it still seems wrong.