As a Canadian, perhaps I can offer a bit of not very useful info. The best seville or marmalade oranges for decades have come from Phoenix where, as I understand it, they were picked from decorative wild orange trees along the city's boulevards. The joke was that only Canadians (with Scottish and British heritage) were foolish enough to pay good money for ugly, warty and inedible fruit. For years, as a columnist for The Toronto Star, I published annually my wife, Ayesha's recipe for orange marmalade. It was always a hit. Last year the Arizona oranges were pathetic - dry and small. Then, just when we'd given up hope and made do with them, the most fabulous marmalade oranges we've ever seen arrived from - wouldn't you know it - California. We're living in hopes they'll come again this January. Does anyone know where they come from?