Bryant RedHawk wrote:Joe, if you have willows in your area, you have access to rooting hormone. See this post cloning woody trees for how to make your own rooting solution. I would do as Dillon suggested with the removal of most of the leaves.
For the branches you have, make some cuts at the base of each branch (equally spacing three or four will make for symmetrical roots) then wrap with moist spaghnum peat moss then wrap that with heavy plastic and fasten with twist ties at top and bottom, this holds the moisture where the branch needs it.
If you need more help with propagating these branches, let me know.
David Goodman wrote:" Is it possible to plant any variety of tree branch and basically grow a new tree from it? We have guava and mango trees so it would be nice to try."
No, only some trees will work. Mango requires starting from seed, then grafting onto the seedling when it's big enough. I've tried air-layering and cuttings. It just doesn't work. Guavas will root from cuttings sometimes; however, they usually don't make very good root systems.
This is a very good book on propagation: http://www.amazon.com/gp/product/0706370791/ref=as_li_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=0706370791&linkCode=as2&tag=florisurvigar-20&linkId=ZYG3D6FUKTW7RFGT
Used copies are cheap and the information inside will literally allow you to grow thousands of dollars worth of trees.