Air layering and wet moss

[baldone]

You still have plenty of time for the layer to be successful. I successfully STARTED layers in mid August when I lived in 7b GA, and wouldn't blink at leaving the layer on the mother tree through October as you're unlikely to get any freezing weather before then. As far as water accumulating within the moss media, I always poked a few holes down low in my plastic bag to allow excess water to drain away... never had an issue.

Thank you, I will redo these today with the pot method mention by oranjeaap.

I save the plastic containers when buying plants / flowers.
With some sturdy scissors or even old blunt secateurs you can cut them open on one side, cut a hole in the bottom matching the thickness of the trunk, or slightly narrower. Takes 5 seconds.
Once placed on the tree use a stapler to seal the pot, one staple near the top, one near the bottom should be enough. Takes about 2 seconds. If you cut the hole the correct diameter it should stay in place without further securing.
Fill it up with moss. I like to cover the moss with some substrate to prevent the sun from drying the moss to quickly. Five more seconds.
Done.
Stays moist 3-7 days depending on weather.

How long do you leave these since you can't see roots developed?

 

[baldone]

I suppose I should say these are all Japanese maples with the exception of one small Korean Hornbeam

 

[baldone]

I changed 3 of the 4 I had going a couple weeks ago to the pot Bonsai soil method. They seem to dry out to quick, so I added moss to the top. These are Japanese maples I had in the yard that where no doing well. So potted them up and nursed them back to health.

 

[baldone]

Update, I am taking this as a good sign since changing from moss to bonsai soil. You can see how the trees had started suffering and now new growth and buds. Fingers crossed.