List your lemons
I was posting an answer to hmacflower's request for hosta suggestions, and realized there hasn't been a list of "bad" hostas in a while.
I made the mistake of planting Carnival and Snowcap, both lemons. They just get uglier every year.
I love the way Independence looks, but it's a pain in the neck, forever reverting and the charming little speckles are disappearing. It was choked with tree roots, so I'm hoping for better things next year.
Twilight is another beauty that just hasn't done well.
What hostas would you never plant again?