Air layering avo seems easy to me. Just leave it for 6 months and it puts root. I didn't want to dig up a large tree that needed to be removed so air layer was a good option. Got 2 out of 3 to work. One was 6 ft tall (1" branch) Hawaiian seedling, other was 8 ft tall (2" branch) jan boyce with 3 fruits. Probably will take a few more 2" branches before cutting down the mult-grafted tree. Much faster than lychee air layer.
Interesting! Now how about
long term success with avocado air layering? I know quite a few varieties... (probably most?) are susceptible to root diseases and fungus. I could see how some rootstocks might survive well long term from airlayer, but I’d be sketched at best about rooting non-rootstock varieties (or less phyto- resistant varieties) and having them survive well over several years on their own roots. Might be possible in some climates but not others..? Of all fruit trees, there’s definitely good justification in using rootstocks for avocados. Lol.
Myself, I have tried to root Lila, Lula, Joey, and seedling Hass from small cuttings in perlite. A few times I actually got some scions to callous! However, for whatever reason, they refused to push roots from that point on, even with a light drench of rooting hormone, and died. Most cuttings just straight up die without even attempting to callous, though.
Honestly if you’re going to start air layering avocados, do so with rootstock varieties and/or some of the more pure Mexican types (apparently this race has better root fungus (and cold) resistance.
[although the West Indian race can take more dissolved salt concentrations and heat]