Up to 3800m altitude according to Farjon's Monograph of Cupressaceae (no idea what that is in archaic measures).

It is very close to the equator (around 5°S), so seasonal variation in temperature will be minimal. Frost and snow at that altitude will only be light, maybe down to -3 or -4°C, and only at night, with no all-day freezing; it could however occur at almost any time of year.

Resin

It survived the bad freeze we had here in January without any protection or damage. We had about 5 days of lows down to 24F for many hours every night, with very low dewpoints.

I don't think that cold would necessarily be an issue for it. Rather, I think soil conditions are a bigger issue. It has never been especially happy in my very heavy, taffy-like clay soils, and in nature, I believe if grows in podzols at the elevations which Resin mentions.

My tree was in a fair bit of distress during our horrible heatwave last July, but has come away this spring and is really looking a lot better finally. It survived where my Libicedrus bidwillii did not (evidently even less tolerant of heat and heavy soils, regardless of how carefully one waters it here).

"lows down to 24F"

What's that?

about -4.5C

when I said "I don't think that cold would necessarily be an issue for it" I didn't mean it can grow in Siberia or Michigan, but rather that, in my area, which every decade or so can plunge to near Zone 8 levels, the cold worries me less than the lousy soils we have here, which this species has never really likes particularly well.

"about -4.5C"
Thanks!

I'd agree with your assessment of its temperature tolerance; I suspect Torreya-2006 is hoping to try and grow it in southwest England with potential freezes in severe winters down to about -10°C or so

Libocedrus bidwillii does well in the milder parts of Britain; I've also seen a young L. plumosa (at Exeter University) growing well.

Resin

I think Papuacedrus paupuana from the highest altitude of its
range would grow in Z8 its never been tryed.I wonder if
David grows any of the Libocedrus from New caledonia?.Also
Libocedrus bidwillii should grow in Z7 hardy to-15c the other
species from NZ L plumosa -10c Z8.The New caledonian
species L austrocaledonica and L chevalieri should be hardy
to -5C.

Davevallejo. Resin is hung up with our Feet and Fahrenheit system of measurements in the US. He doesn't get it as you probably figured it out by this time.

That is why he says " Whats that."

He doesn't understand we grew under this system of measurements. In the 80's we tried to convert. People never bought into it and never will.
It's easy to convert.
Actually 3800m =12467ft. to be correct.

Dave

do you know where i could buy papuacedrus?

I am looking for some in the UK