The Drapery glass from which the flowers are made is manufactured by Uroboros Stained Glass in Portland.  It is hand rolled into a sheet at around 1500 degrees.  As it begins to cool, two people manipulate it with metal pinchers and shake it into folds which gives it the Drapery look for which it is named.  Drapery glass has been hand made this way for 200 years.

Since the thickness of the glass can vary from an eighth inch to over an inch, Drapery glass is the most difficult glass for a stained glass artist to work with.  Because of the intense hands-on work the glass is expensive but is valued by the artist for its beauty and for the three dimensional feel it offers to the final product.