About five miles from our home, in a road ditch adjacent to an old railroad bed, is a prairie remnant.  Prairie Phlox is one of the many true prairie flowers that still bloom there.  These flowers mark a quality prairie remnant.  Old railroad beds are often a great place to find prairie flowers, because the railroads used flame throwers in the old days to burn off the weeds.  The prairie flowers could withstand the burning better than the alien weeds.