George-
All of the species I have produce new foliage in the fall and early winter.
I grow the species you have, except the hybrid, but I have the parents, A. concinnatum & A. cyrenaicum, plus A. korolkowii and another one, purchased as: A. concinnatum, ssp. albispathum, which is not a valid species name and is probably, A. orientale. Has thick leaves, with prominent white veins. Has never produced a spathe in more than 5 years, so no ID.
korolkowii & cyrenaicum is somewhat tender for me. Temps below -5C will zap the foliage, but it regrows after a warmup.
Rb

Thanks Razorback I appreciate the response.

I assume your alias means you are from Arkansas. I grew up around Russellville (Pleasant View area)and Dardanelle (Centerville and Ola) till we moved to Oklahoma when I was 13.

George

Yep, born in the Ozarks (Mountain View), moved to the flatlands (Blytheville), near the Miss. River at age 9. Spent an idyllic youth fishing, hunting, horseback riding, swimming, partying, hanging out and generally raising H***. Uncle Sam must have heard about it, and as soon as I turned 18, He wrote me about his grand plan and that I WAS INCLUDED! He indicated that only my hunting skills were required, leave all that other baggage behind. The party was over!
Thomas Wolfe's novel "You Can't Go Home Again", certainly described my feelings after being away for 8 years. I haven't been back there in more than 25 years. I'm told that a Garage and Used Car lot occupies the land where our home was located. Progress, in the name of Progress!
Rb

George/Rb-
Are any of the arum you mentioned hardy to zone 6a?
I have the italicum but would be interested in others.
Do you know of a good source or do you have plants to trade (in the Spring)? I have many types of elephant ears.
ROX

According to the list on the Aroid.org site, many of the arums are hardy there. That's what I'm working from at least.

George

Here is a link that might be useful: Hardiness list