This is a very rare white rehmannia elata. It is pure snowy white with a yellow throat and pale pink markings on the top of the flower.
Rehmannia elata - Chinese Foxglove. Purchased and planted this year ('03). Indicated zone hardiness as Z6-Z9. Elsewhere have read that it is not hardy to Z6. We will see. I love it so far.
I'm growing this plant in Beaumont, TX.
Begining growth in a 5 gallon pot in my backyard from stem cuttings, Zone5A, in upper NYState.
Good looking leaves.
It spreads from roots and will cover an area nicely in a couple years.