A lot of people were in all kinds of religions... I'm not sure about wicca specificially, but especially eastern religions....
Not sure about Wicca. Buddist and many other eastern religions also Jesus freaks. (Yes, that is what they called themselves) were very popular. December
I'm sure it was a mix or religions but Christianity seemed to be ever present. Jesus even looks like a hippie, at least in all his representations that I've seen. but then theres always shanmonster who would disagree http://www.zowiewowie.com/artman/publish/article_54.shtml
I think that it was just the break from the 'traditional catholic' way of doing things that became interesting to hippies and beatniks and such...
A part of the song 'Hair' from the musical 'Hair' comes to mind: "They'll be ga ga at the go go When they see me in my toga My toga made of blond Brilliantined Biblical hair My hair like Jesus wore it Hallelujah I adore it Hallelujah Mary loved her son Why don't my mother love me?" A lot of the lyrics in that musical refer to Jesus or God in general.. for example these lines (from 'Manchester England'): "Manchester England England Across the Atlantic Sea And I'm a genius genius I believe in God And I believe that God Believes in Claude"
www.caw.org one of the earliest "hippie" neo-pagan movements (america, early 60s) (as opposed to gardnerian witches & such folk out of england)