I just wanted to report that, after two failed attempts, I think I finally have found the perfect camellia for a very sunny spot -- Hiryu. It gets tons of afternoon sun and seems very happy. Also, I researched cold-hardiness and learned that Hiryu had survived some terrible freezes. We had one of those late-spring freezes last month, and despite terrible looking Japanese maples, and totally blackened needlepoint holly, Hiryu came through all smiles, with just some very minor damage to emerging new growth, and no damage to existing leaves. It looks much better than the c. sasanqua in my yard. So I'm nominating Hiryu as the hardiest of all the camellias (competing in my yard with white japonicas, mine no yuki, kanjiro, chansonette, and alabama beauty), excepting of course varieties developed specifically for cold hardiness.