I live in North Texas but they grow like crazy all over here. Is this typical for a baby tree? Thank you, Jacqueline The 3 were healthy all summer after I planted them the end of May. The one tripled its size at least, the others made double trunks instead of growing taller. The actual trunks still look green and alive. I know most hate these trees but growing up near Chicago I wanted at least one in my yard.
It's natural for Mimosa trees to lose branches, and they like to be pruned regularly so the heavy branches don't snap off so often. I think your trees may be just fine and, with enough protection over the winter, should sprout new branches in the spring. For now, it's best to let them have their dormancy period.
You may want to protect them with some tree wrap or burlap if you're expecting a harsh winter.
Here's an article that may be helpful: https://www.gardeningknowhow.com/ornamental/trees/mimosa/growing-silk-trees.htm
with lots of growth around the bottom. Are these branches suckers and need cutting or should I leave them alone? I want so much for this little tree to thrive. I live in Phoenix Arizona. HELP
This article should help. If your tree is grafted, go ahead and prune out the branches below the graft line.
https://www.gardeningknowhow.com/ornamental/trees/mimosa/chocolate-mimosa-trees.htm
Are they really that bad? Some even discourage intentional planting. I think they're beautiful!
I think they are beautiful, too, and that is one of my fond memories of my grandmother's house when I was young. They are considered short lived, with weak wood and a bad habit of reseeding groves into disturbed areas where they shade out native species. There are a number of trees and shrubs that are considered a threat to native species. Another is the non-native burning bush, which I see everywhere. It is reseeded with help from birds eating the berries and is considered invasive.
https://www.gardeningknowhow.com/ornamental/trees/mimosa/mimosa-tree-weeds.htm
https://www.gardeningknowhow.com/ornamental/shrubs/burning-bush/burning-bush-control.htm
We want to plant a Persian silk tree but not allow the tree or roots to become too large. We have been told a large container will work but if we plant it in the ground and prune it to control it's size will that also restrict the root growth as we understand it's root growth can be extensive.
You may want to consider an alternative to the silk tree as it has more problems than redeeming virtues. As you noted, its roots can upend sidewalks. Pruning the canopy won't help. It reseeds easily and colonizes in your yard and in other places, negatively impacting native species. Here is more:
https://gardeningsolutions.ifas.ufl.edu/care/weeds-and-invasive-plants/mimosa-trees.html
https://www.gardeningknowhow.com/ornamental/trees/mimosa/growing-silk-trees.htm
https://www.gardeningknowhow.com/ornamental/trees/mimosa/mimosa-tree-weeds.htm
There is no central leader. Is this acceptable for the future of the tree or is there something we need to do?
Mimosas are short lived trees and often grow multi-trunks. It's important, then, to prune all the branches when young to raise the canopy and develop good scaffolding. The branches are often brittle. You can do light pruning at any time to remove dead wood, but heavier pruning should be done late winter.
I live on southern Fl east coast. Thsnks
It appears to be doing just that! Those new growths at the top may sprout branches, or they may continue on their own. A light pruning next year will force more branching. I would not do much to it this year.
Here are some articles that will help you with the care of this tree:
Both were transplanted from saplings from the same tree seven years ago. They're 80 feet apart. Both look strong and healthy. They get about the same amount of sun. The soil could be very different.
The only way to know for sure will be to test! This will help:
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-moisture-in-plants.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-soil.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/soil-ph-plants.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/test-soil-for-pests-and-diseases.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/making-sure-soil-drains-well.htm
Ultimately, though, I think that this is luck of the draw (Genetics). Likely, these are the traits that made it to dominance, and bloom enhancement, as far as color goes, may not be possible.
Otherwise, amend as soil tests recommend, and you will get the best results possible, regardless.