Though invented by Lovecraft in 1928 [needs confirmation], the name Cthulhu is probably derived from the Classic Greek word chthonic meaning subterranean, as apparently suggested by Lovecraft himself at the end of his 1923 tale The Rats in the Walls.
They're listed as a zone 5-9 plant but as a member of the hibiscus family, Rose of Sharon naturally prefers a warm climate. As a living fence, which is what you really want, you'll be much better off with some kind of evergreen. Juniper, spruce, pine, fir, there are many sizes and varieties to choose from.
Brown-Eyed Evening Primrose A hardy annual plant reaching as tall as 3 feet, the brown-eyed evening primrose presents striking white delicate blossoms with chocolate brown centers. The foliage of the flower grows plentifully and is spring-green in hue. The brown-eyed evening primrose thrives throughout the Mojave desert region and in desert areas below 6,500 feet in elevation. Plant brown-eyed evening primrose in sandy, well-drained soil in parts of your garden that receive full sunlight.