Sorry, i have said it right a few posts befor.
They grow there too, i mentioned. I saw it when i visited my mate in Bergens suburb.
I ment the humid and wind exposed coats of northern sea aren´t that good for cultivaion friuts of exotic plants. Moreover the average T is less then in some German or Italian regions with Zone 6-8. So the regenaration time is shorter. Growing is no problem, but cultivation.

I know many projects at northern sea coats, what have big problems with wet earth and soil and cold wet wind.
That´s sometimes more a problem than minus degree. So a wind protectet location is much better. Maybe at a house wall etc..

Please believe me, that i know that many exots grow at northern sea coats. But the mild regions of eastern sea in dk, swe, d and the river dales in southern germany or northern italy are better, though it´s sometimes colder at night in winter than in Bergen or Stavanger.

MvH

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