The Sacred Hearth

This summer I would like to create a spiral garden in my giant, shady front yard. I would like the infrastructure (for lack of a better word) to be in by July 1. Obviously, as with all garden projects, it will never actually be done.

I don't want it to look too Pagan-ish, because my neighbors already think I'm insane. I do want it to look sort of faery woodland/secret gardenish.