I don't know how far north it goes, but I know there's plenty around Stockholm. I'd expect it to come up a decent bit further, since I know Anchorage is north of Stockholm (Stockholm is at 59° N, Anchorage at 61° N).
Wikipedia says "all of Sweden", even high up enough that you're well above the tree-line.
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Date: 2015-07-31 01:28 pm (UTC)Wikipedia says "all of Sweden", even high up enough that you're well above the tree-line.