There are so many variables we don't know.
Which lead to billions of "it depends"...
I'm Surprised
@Adair M ...Mr. "It Depends" has such a solid....stance! Lol!
I began pondering this yesterday and starting thinking about the size "compass" you would need to set up a rig that always aligns with the sun mechanically.....
Because if you are thinking about this.....
That would be the ultimate solution.
Motorized automatic alignment on perpetually rotating turntables.
But it is simplified with observation.
And simply rotating trees each day.
It is ALWAYS play it by ear....
Like when Dav4 heard that Yard Oak Branch snap....and crash his bench....
He knew he was going to have a little more sun! So A J. maple may need to be moved.
And a juniper has a new good spot!
Let's say you have you benches aligned anyway......
And you allow an elm to shade out everything.
Alignment becomes a non issue.
How close together do you keep them?
Is it an A frame stand with plants on both sides? How tall?
One side up against a wall stand?
None of these variables matter.
You are always going to need more space.
In the shade and the sun.
And if you don't rotate them.....
It all goes out the window !
Sorce