Air Layering Made Easy
Air layering is a propagation process where roots are grown out of a branch- while the branch is still attached to the tree. It allows you root a very large cutting.
There are products like the clamshell air propagator that make this process easy and effective. Each propagator package comes with 2 disks of compressed growing medium (a mixture of peat moss, coconut powder, dry hydro gel and other ingredients).
Add one soil disk to each half of the shell and water thoroughly. The disk will expand.
Decide where you want to place the shells on your plant. Use pliers to remove a one inch strip of bark and cambium layer. Brush on a rooting compound.
Position your clam shell. You can use a rubber band to temporarily hold it in place while you secure the ends with zip ties.
Place a zip tie below your clam shell to keep it from sliding. You may need to stake your plant. The shell can get heavy when filled with water.
Water the shell weekly.
The amount of time needed to root will vary for each variety of plant. It might take 2-3 weeks. It might take 3-4 months. When you see roots poking out of the sides of the clam shell, then you know its time to remove it. Simply snip the zip ties and remove the shell. Cut your newly propagated tree below the root ball to remove it from the parent tree.