Is there a plant that's considered easy to grow
that you have a hard time with?
I tend to kill Siberian iris. I have a beautiful purple one that I collected in PA that's still alive and bloomed all of these years, but hasn't really grown either. I got a ton of what I think is Siberian iris at the last couple of swaps (thanks Ais and Nancy) that I have put in really prime places that should do well, but we'll see. I think they don't like really wet clay, so the new divisions are in highly composted soil where they shouldn't get too crowded by other plants or get too wet or too dry. Also, I can't seem to grow trumpet honeysuckle from seed at all.
What about you? Have you had any trouble with something that's not supposed to be any trouble?