From Tony Avent's fine article on growing ladyslippers ( ...Read Moretarget="_dgnew"rel="nofollow">http://www.plantdelights.com/Article/Cypripedium-Lady-Slippe... ) :
"This 2003 Werner Frosch hybrid combines the vigorous genes of Cypripedium parviflorum var. parviflorum with the large flower size of Cypripedium fasciolatum. Atop the 16" stalk of this mid-season bloomer, enjoy a long-lasting creamy pouch about the size of a small egg, highlighted by amber-purple handlebar moustache-like sepals. Cypripedium 'Inge' is fast to form a nice clump. (Hardiness Zone 4-7)"
From Tony Avent's fine article on growing ladyslippers ( ...Read More