[north-south or east-west]
Southwest-northeast?
That way, early and late in the season, when the
sun is to the south from sunrise to sunset in your
latitude, all plants get the even sunlight that they
would get in an east-west row at that time of year
(with a small window of time at sunset that favors
the southernmost plants a little bit; good place to
put your latest-ripening cultivar). In midsummer,
when the path of the sun is closer to overhead, it still
shines on all of them at the same time as it rises and
sets, the way it would in a north-south row.
Other factors like soil, water, weather, etc will probably
make more difference, though, so I would do whatever
seems most convenient given the actual layout of the
property. As long as they aren't being shaded by trees
or buildings, orientation of the row is not critical.
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