Highly successful organic mixes
I've been using organic based mixes for potted fruit trees for over 7 years. In all that time I've repotted one tree. Only a few trees or fruit bushes have had any problems with vigor or health. Most importantly fruit quality has been superb.
Unlike many container applications fruit quality is best from trees with moderate to low vigor.
Here is a Star blueberry 7 years without repotting that yielded 15+ lbs of fruit this year. This is after harvest and pruning.
This is part of the harvest in front of another blueberry that has about 12 lbs fruit after 7 years in the same pot.
I could give many more examples of similar success with all kinds of trees. I now have about 100 fruit trees/bushes in pots.
And a big plus is that my organic mix is very light weight. I'm getting up in years and weight is important.