In article ,
Martin Brown writes:
Incidentally where exactly were these vineyards in Scotland? It has the
smell of an urban legend - it is just far too wet in winter up there
and nothing remotely like a suitable continental climate.

Figure 65 in HH Lamb's "Climate, History and the Modern World" maps the
known medieval vineyard sites in England. I think we can assume that had
any been known in Scotland they would have been shown. (Of course, that
book was written a couple of decades ago, and it is possible that some
may have been discovered more recently.) There are a lot of vineyards
south of 53N (the latitude of The Wash) but only 3 small ones north of
that, and nothing north of 54N(roughly the latitude of Leeds).

Having said that, I suspect that some areas in the rain shadow of the
Scottish mountains would have been dry enough. Whether they would have
been warm enough or sunny enough in summer is another matter.
--
John Hall

"I am not young enough to know everything."
Oscar Wilde (1854-1900)