Considering t. fortunei have made it in Sitka, I think a decent-sized e. debeuzevillei would stand a chance as well
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It's only a guess, Paul, but I think the Queen Charlotte Islands (Haida Gwai) would be near the northern limit for eucs, if they didn't drown from all the rain or break from all the windstorms there.
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If you drink, don't drive. Don't even putt.