Parrot's Feather

Is the "Parrot's Feather" mentioned by Mark Chandler by any chance the SAME
"Parrots' Feather" that I paid a pretty penny for last Spring,  from the Lily
Ponds folks?  If so, IS IT WINTER HARDY?  Water Hyacinth is perfectly
harmless here in Central Iowa, as our winters exterminate it. Thus, we go to
some lengths to get some of it each spring.  Good stuff here.  Now I wonder
about "Parrot's Feather."