Just got this daylily in the second half of May 2021. Purchased due to the thread about the blackest daylilies, here (
The thread "Blackest?" in
Daylilies forum ). Despite the later arrival it did make me a couple of blooms. I also managed to add some pollen and get a single seedpod from it in 2021. The seller told me it is a fast increaser, although they gave me 3 fans, and I counted 3 fans last week indicating zero increase. Still, it is settling in. Not yet been here a single year.
It was also not so black for me. But would be unfair to judge fully on the first year performance. 2022 should herald a better performance, and hopefully blacker coloration. (That is why I bought it as usually I would not buy daylilies that give less than 6" flowers unless they have something very special about them).
I will say it was hard to come by. It seemed to be quite sought after on the daylily auction (even the seeds go for crazy prices).
My seedlings where it is pod parent look healthy and will be planted out in May.
With regards to rust resistance, it was planted next to a RFK which brought rust into my garden (grrrr
). Earl Porter did get some rust from it, without doubt. But I treated it with fungicide [Clearys 336F, or tebuconazole I think] before things got bad (not sure if they would have got bad, but not taking any risks).