Is Petunia magical?

[Eddie]

No: HPFGUIDX 160320

> Jenni from Alabama:
> I've often wondered whether or not Petunia was born 
> with magical powers but doesn't use them. She certainly seems to know 
> a heck of a lot more about the magical world than she is letting on. 
> [...]
> I still wonder about Petunia though. It has never 
> been proven that Petunia isn't magical, just that she doesn't do 
> magic. I've wonder if she has that ability but chooses not to use it. 

Eddie (from Potterverse (in Iowa)):
Rowling said
(http://www.quick-quote-quill.org/articles/2004/0804-ebf.htm) that
"She is a Muggle, but [...] there is a little bit more to Aunt Petunia
than meets the eye".

While on the subject of Petunia, do we have any canon to tell us
whether Petunia or Lily is the older of the two sisters?

Eddie