I looked back at my PlantStep software for blooming information so that I could post something more helpful here. Here is some information I found:
I only had/pollinated 6 blooms of Night Embers. It bloomed from July 6th to July 18th in my garden. Out of 6 pollinated blooms, two formed seedpods. Not the greatest pollination rate, but that does mean that it IS pod fertile.
I used Night Embers as a pollen parent on 5 blooms (four different cultivars), and none of them took. I wasn't terribly surprised, the pollen heads on Night Embers was nowhere near the full, fluffy-looking pollen heads of other varieties. I've deemed it a poor pollen parent in my garden, but I may try again next year.
Night Embers has a beautiful bloom, though, so I still highly recommend it as an ornamental, so here's a picture:
