Hi Maggie...I make no guarantees!
Apparently some species of Mulberry are considered invasive in parts of the Southwest. Living in the Northeast I am not familiar with particulars for your area. I have linked a page below to the California Rare Fruit Growers with info on growing, etc. You may want to check with your local extension office to make sure you are not planting a potentially invasive species.
As for nutrition level. The leaves on the weeping variety are not altered so I would assume they are just as viable a food as its parent tree, plus you are raising these as feeders, not siolk producers. You might want to check this out with Mulberry Farms and see if they have any thoughts about it. Hope this helps
lele
>>Hi Lele: Thanks again for your able help. Yes, I live in Southern Ca. I take it that the weeping one will do here and be fine for the Silkies. The tree, though will take a while for the leaves to be plentiful enough, seems to have a habit that will fit my yard a bit better. Though, what I read was that the White Mulberry tree is in fact a tree that is more extensively used for keeping Silkies as they flourish on these. If you know in fact that this variety will do, I will get it as a compromise so that I will not have trouble with my neighbors complaining about staining fruits. They love to gripe down here in these parts. Again, thanks for ending my mental debate. Maggie
Mulberry
-----
0.1 veiled - Luna
0.2 green anoles Jaida & Jetta
0.1 brown anole - Jamaica
0.2 house geckos - Gaia & Tia
0.2 felines - Kyndra and Líta