Red mulberry trees are one of my favorite trees. They make fantastic additions to any permaculture garden or farm. I actually have two mature mulberry trees on my property, which is great, but I also planted half a dozen in my food forest.
Mulberry trees in general are found in most planting zones, from the tropics to the very cold temperate. The Red Mulberry that we have here in zone 6 Pennsylvania is an unbelievably adaptable tree that can be found as far north as Canada, and as far south as Florida.
A full grown Red Mulberry can grow 30-45 feet tall, which seems tall, but it is considered a small tree.
The best part of The Red Mulberry is the excellent sweet berries that they produce. The berries mature in early summer and tend to hang around for 3 or 4 weeks. Mature trees are loaded with berries that resemble blackberries, but taste much better in my opinion. To me they taste like a sweet blackberry, but there is something different about a mulberry that is unlike any other berries that I have tried. People use the berries fresh, to make wine, pies, cobblers, and preserves.
Another great thing about Mulberry trees is that they really don’t have any pest problems that require any attention.
Like most plants they would love to have fertile well drained soil, but they can also handle poor soil, or just about any soil for that matter.
I think the Red Mulberry tree should be included in most permaculture sites. It truly is a multi-functional plant. The fruit, of course is of great benefit to people and wildlife. The leaves can be made into a tea that can be used to treat dysentery. The leaves can be used for mulch. The tree can be used as a windbreak, or pruned to form a hedgerow. I have two planted in my chicken paddocks because the fallen fruit makes excellent chicken forage.
This is really a great tree to consider including in your permaculture projects!