I have a tall cryptomeria which I want to reduce its height. I know that cryptomeria reacts well to air layering. I have only one experience with air layering in a ficus. It was very successful. Now I’m preparing for my cryptomeria. What is your recommendation for timing? When to start and when to finalize air layering for that tree? I know that climate matters.
Cryptomeria are the easiest thing I’ve ever air-layered. I usually start in May with the goal of separating late winter/early spring when I’d normally repot and I’m in the SF Bay Area (Mediterranean climate). It would probably work if you did it now, but I wouldn’t recommend it. The next best time is late winter/early spring when you’d normally repot. Whichever time you choose you’ll have to protect the roots from temperature extremes (hot & cold).
Thank you for your reply. I think it will be better to wait till spring. I have coco peat and sphagnum moss, I know that moss is a better medium for air layering. I’ll use moss.
Am curious about your goal with the layer - are you looking to make two trees, or do you not like the bottom part of the tree? If you like the lower trunk and roots you can simply prune the trunk.
As for the layer timing, I do exactly what Danny recommends
Thank you for your reply. I’m ok with the lower part of the tree. Yes, I can prune but the tree is too much tall and somewhat off-balanced. As seen from the photos, it is leaning. I think, air layering will be good to reduce its height. I’ll get 2 trees and balance. I’ll wait till early spring and do the layering than.