In the 36th ed. of ABC and XYZ of Bee Culture: "Buckwheat flowers die at noon and new ones open the next day, according to Beutler.--A.D. Betts." (I'm just passing along the quote...and don't know whether to believe it or not...) Regards, Dick Allen :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: -- Visit www.honeybeeworld.com/BEE-L for rules, FAQ and other info --- ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::