It's not often that I will give a 'negative' review for a daylily that successfully grows in my zone 3 gardens, but Merry Morgan has earned one. I made a comment about it in 2023, and I will quote that comment here:
"'Merry Morgan' (Bunting 2008) is noted as being polymerous (99%) and single form. In reality, it doubles in form (nearly 99%), but does not poly with any consistency. I think I have seen two or maybe three poly blooms on it in the five years I have had it.
If you appreciate it for its double (not single) form, then I would say that it is reliably hardy in northern gardens. If your interest is for its ability to produce polymerous blooms, then I would say there are many better options to choose among."
Add two more summers (the remainder of 2023 and summer of 2024) and I do not retract anything said above. This daylily, at least in my gardens, is nearly 100% double form ... and virtually 'never' produces a poly bloom.
I have checked and rechecked my bloom against the AHS database, the colour / general appearance appears to be the correct daylily ... but the stats are just not correct.
https://www.daylilydatabase.or...
My garden...
I can't share with you a picture of Merry Morgan in single form: I don't believe I have one, not sure I have ever seen a 'single' form bloom on it. It doubles all the time. As for poly blooms... it polys so very rarely, I cannot produce a single image from my records over the time it has been in my gardens.
As though that were not already cranky enough as a poor review... the scapes are persistently short, often blooming within the foliage. I have this planted in a prime location, excellent soil and sun, and it still under-performs every summer. This coming spring, I believe I will be giving this one to a neighbor and replacing it with something better... which would be almost any other daylily. Disappointing, to say the least.