Minimum altitude range 4200 ft. according to wikipedia. Doesn't seem to me like nights down there would be quite as warm there as at the University of Florida, even adjusting for the latitude. Pinus in general seem like a tolerant lot, maybe not compared to other conifers but definitely compared to other ornamental plant genera. I've seen a stunning Pinus monticola is southeastern Virginia but alas the plant is no longer there and was removed for a construction project.

So many good pics & relatively little to contribute.

Below (what I guessed from inspecting) is a Himalayan x eastern white pine hybrid on a nearby campus:

The pic didn't take. Try again:

Sweet! I love the droopy white pines.

"I love the droopy white pines"

Have you tried Pinus bhutanica?

Resin

I have a small bhutanica - doing well, but somewhat slow growing so far. At one time I had quite a few seedlings of bhutanica from seeds collected in Bhutan. I gave them all away though!

Beng, is that a broom in top of your specimen?

Conifer, I notice that now in the pic, but it didn't impress while I was there. Prb'ly just an effect of the view-angle.

Salicacae, you gave to me a couple of the Bhutans! One was destroyed by deer, but the other is OK -- struggling a bit after a transplant. The needles are stunning -- the palest, most delicate gray blue green drooping gracefully like Resin's pics.

Beng, I'm surprised to hear that seedlings are surviving for you. From sites I've read online P. bhutanica is only cold hardy to zone 8. Is this species more cold hardy than the closely related P. wallichiana?

A bit less hardy than P. wallichiana. One or two years isn't enough of a test yet, if the winters were mild - wait to see what it looks like after the next bad winter.

Resin

It's actually about 7 yrs old (so has survived -9F). It has suffered from my re-transplanting it 2 yrs ago into full sun, but I've never noticed any windburn. I really hope this one survives 'cause the pale, weeping needles are just gorgeous.

..And it is was from wild collected seeds in Bhutan, so its legitimate and not a hybrid. But I agree with Resin, more testing is needed to really comment on its cold hardiness.