I read in a book recently that cordons on a south facing wall should point from the west to the east.
Is this essential? I've got some trees should be arriving soon and it would be easier to fit them in with the existing garden if they lent to the left as you look at them. (which would be the opposite way to the advice in the book)
I get a bit frustrated when I pick up these snippets of information but don't understand the logic to them, so don't know if I should stick rigidly to what the book says or improvise