Board Thread:False Info and Speculative Discussion/@comment-24732895-20140622230817/@comment-4091815-20140701235844

Paul.rea wrote: Jeff Davis clarified this in a tweet a long long time ago when he was still on Twitter regular like -

"@JeffDavis75: One tweet before I go to sleep: Stiles is not magic. But Mountain Ash is. #teenwolf""

And before someone asks - it was July 17, 2012 - his final tweet for the day. This is the canon - don't know if y'all been flying in its face or not but - here it is.