I've noticed that none of my hosta have much, if any, corrugation. My oldest plants (besides noids) will be in their 5th year, but none have corrugation. Is it influenced by climate? age?
One of my 10+ year old noids is probably hyacinthia and it has no corrugation. Francee has no corrugation, neither does S&S, which I bought in 2009.
Inquiring minds want to know.