I have IL Everbearing, Shangri La and Beautiful Day from Edible Landscaping. So far, the Beautiful Day is disappointing. Doesn't seem much different than other white mulberries growing wild, and the fruit seems small. It could be the conditions, the plant is in an area where the drainage is not great. This year, it seems that most fruits of this plant were damaged by a late freeze. The IE is a vary tasty mulberry, so far the fruits are not that big on them either. The Shangri La is growing best, lush growth, big leaves, and large fruit. The taste can be good, more of a mild, sweet fruit compared to the sweet-tart of the IE. We have wild mulberries everywhere, some are pretty good. One is a Morus rubra, and I like it a lot. Long reddish black fruit that are a more raspberry like flavor. I took cuttings while still dormant and put them in the ground in an area with rich soil and lots of soil life. They have leafed out, but probably no roots yet. I also have scion to try grafting it to some of the less desirable wild mulberries. My past attempts to root mulberries in pots with a humidity tent has not been successful. I planted my mulberries in the chicken yard to give them some other fruit to eat. They are free range and will eat everything, including my figs.
I wish I could grow the black mulberry, never tasted one, but I understand they don't do well on this coast. I hope you have success with your Noir de Spain Pete, keep us updated.
Mike in Hanover, VA