Our climate suits avocados but not our soils, so we made modifications: in this case digging a drain, building a mound and planting tagasaste.
Here is how we went about that over the last four years: https://ecothriftylife.com/2017/01/01/permaculture-four-dimensional-design-case-study-creating-a-micro-ecosystem-for-avocados-in-a-marginal-location/
This is the mound two years on from the image above, as we actively prune out the tagasaste and allow the avocados to grow up through.
This is an example of using tagasaste as ‘nurse trees’: you can see them pruned out as the avo grows.
And here is that tree on planting day two years ago.
Here is our intern, Rikke, planting that tree in 2017.
Here is another intern, Oliver, planting another avocado that day.
And here it is today.
Yum! Can’t wait.