There are a lot of Ls and VLs that bloom late for me. Many of them are listed above, but some are not. The ones I'm wanting to start with are some bud builders that start when normal daylilies bloom, but still look to have weeks of blooms left for me.
One new one that is particularly good this year is Party Every Day.
This one has been blooming for me for since July 10, one day shy of 4 weeks, and look at the little buds that are still on this one today:
If that little nub in the red circle is a new bud as I think it might be, I'm going to be seeing blooms from this on until late August, I would think.
Other bud builders that go late include Frans Hals, which most people know. Here are some others in my garden that will probably go well into August despite a relatively early start:
Uncle Bryan, which also started blooming on July 10th for me this year:
Crazy Awesome... probably only has 2 weeks left for me, but still not bad since it has already bloomed since July 8.
And here's a few traditionally late-starting L's and VL's that I didn't see listed, as they look in my garden today:
Mascara Snake -- Just got started this week. If I stake the scapes and kill my neighbor's morning glories, it should bloom until September for me.
Pagan Spirit (Blooming since July 23 - Two weeks)
Lots and lots of buds left could get to the end of August.
Jury's Out (Apps) -- Just started July 28. Seems to be a bud machine. Only had it since last fall.
Late Report -- Has bloomed 5 weeks for me the last couple years. Started July 28 this year.