Lois, Arisaema rust is a problem - an incurable one so far. Look in the Aroid-L archives for the lengthy thread on the subject. There are a few references in the Arisaema-L archives as well but they do not identify the organism or deal at length with it as was done in Aroid-L (before Arisaema-L). Ray <GRSJr at Juno.com>