Berry and fruit trees, Gritty mix of 5-1-1
I am just getting started and trying to understand the thousands of threads related to Al's soil mix. For raspberries and blackberries (erect thornless) which mix is better and how long will the mix last in a 18" pot (or should i use a bigger/smaller pot)
What about for either a peach, apple, or plum tree in a container, 5-1-1, or gritty?
Any special tweaks to the "recipe" for either?