Dear All; I can't help myself, but.... I do not think that Steve is at all OT (Off Topic) bringing up Spuria Iris. These are exactly the sort of plant we discuss here. Their dense storage organ (rhizome) is modified to tolerate periods of extended drought. They act, for all intents, like a "bulb" in our sense of discussion topics. We have often veered off into certain species or forms that fit into pbs even though the entire genus may not be quite so bulbous. I certainly think discussion of 'tuberous' Delphiniums is OK and Herbaceous peonies is applicable here, while herbaceous delphiniums and woody peonies are less appropriate. Many genera fit this flexible 'bulb definition even though the entire genus is not bulbous. OK, Steve ask some more. Jim W. -- Dr. James W. Waddick 8871 NW Brostrom Rd. Kansas City Missouri 64152-2711 USA Ph. 816-746-1949 Zone 5 Record low -23F Summer 100F +