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["Randy Burd" <burdrs@gmail.com>]

Maybe a basic question but I am having a hard time finding the answer. 

I am planning to put in a trellis for my apples and pears as well as another
on for grapes on a north facing slope. I live in Maryland (zone 7a).

What direction should I orient these trellis' to maximize productivity (best
sun throughout the year, best air circulation, etc.)?