rivada.... it was [temporarily] a shame because it was my most stunning hosta -- my absolute fave .... i was saddened to see it turn green so early in the season... but this year, it was back to normal. The 3 pieces that I took out, i have all back together again... the main plant is still in IL and the other pieces [which had the green leaves] i have up in Wisc, and it is back to it's beauty.
I asked this question on hallson's site and they said that it could have been stressed, turning green -- and that is common with Undulatas.