Our daytemp was -4 C today. I decided to open my styrofoam box. Here is what i saw.

This is my cordyline australis. It is suffered from combination of moisture and low temp

This is my palm which was planted as my first palm a three years ago.

This palm arrived from the Italy (Rome)from Massimo Cola.

This is little brahea armata. It is suffered from our wet and cold summer and autumn.

This are yucca rigida and jubaea chilensis. It is in perfect form.

This is my sabal minor. It grows too slow but i liked this palm.

All my plants stay without extra heat.

Looking good!

That Cordyline looks in fine shape,just some minor cold discoloration
but nothing at this point that it can't grow out of-not even that visible!

What kind of palm did Max send you?

Almost looks like Tesan????
Is it a Trachy?

Hopefully the cordyline will be ok! Everything else looks great, serj!

They look very good to me, great job with boxes.

What has your minimum temp been?

Barb

Yes, very nice!
Personally, I use electricity but the cost of that is absurdly low in Oklahoma. I know that is not practical in most places. --Erik

Thanks a lot for good replyes. The seedlings which i received from Max are tr. fortunei Naples. Barb, our minimum temp has been about -13,3 C or so. A have a good microclimate. There are many forests around my town. We have nuclear power plant at the north-west location. It is 15 kilometers from our town to the NPP. Our NPP has lake for cooling with warm water. Usually our temp higher on 2-3 degrees than has official weatherstation with located on 19 kilometers to the souch in the nearest town.

I have to say some very interesting things. 😉 I have digital temperature sensors DS18B20. One sensor inside the box and is connected to the my fathers computer with twisted pair. Then the temperature outside was -13,3 for short time inside the box was -0,4 C ❗ Usually we have followed temps:
- outside -5 -6 C, inside from -0,4 to +0,4 C;
- outside -10 C -12 C, inside from -2,2 C to -1 C. It depend on duration time of the low temperature.

Good data, Serj! The box method alone is working for you.
I think the reason it doesn't work as well for me, temperature-wise, is my microclimate: strong winds.
I do use that method, and no electric heat, for my avatar Butia and a couple Trachies. --Erik

Everything is looking good Jim! So how did that snowstorm work out for you down there? HERE?? We have (in my yard) 35" (yes 35 inches) of snow with areas drifted up to 5 feet! We got 20" on Friday night/Saturday on top of the 11 inches we got a few days previous. That is on top of the few inches that remained from the foot we got a couple weeks earlier. This winter is living up to the "La Nina" prediction in a big way! Few degrees below zero (f) right now... And possible double-digit below zero nights forecast the next couple nights before moderating back to near-normal. Meanwhile inside my enclosure the trachies/y. thompsoniana are happy. Lowest temp inside was 31.9 and highest was 43.5. It seems my heat/lighting keeps it in that range all the time regardless of outside temps. Last winter our absolute low was -15f (at the airport/officially). It's still only mid December and the highs are still supposed to be in the upper 20s right now, this is going to be a long winter I fear...

That is a great result for your palm hut!
I'm also eager to hear from Jim, and see some of his famous snow photos.
We dodged the bullet--no snow, and the coldest it got was +17 oF 😀
That is what the La Nina predictions were for down here. Amazing when those long-term forecasts actually come to pass.
--Erik

Jim I am not sure you take this hobby seriously enough. I mean you could put a dome over your entire yard and not have to do each plant individually. Your set up and dedication to this hobby is unbelievable. Nice work and I hope your winter is a mild one.

Wow, you guys got a little snow did you!!! 😯 😯 😯 I'm not sure building a bio dome over Jim's yard would have worked for this snow storms, looks at the Metrodome and they have 100's of millions invested 😆 😆 😆

If we got snow off this last storm we'd probably have 3 feet worth too. We got a DUMPING of rain here!

Hope everyone, and everything is all good for the people in this beasts path.

Bill

serj, wow, 13 C difference box vs outside temp...excellent!
My palm hut is only 3 or 4 degrees warmer than outside temps, even after using spray foam on small gaps where panels are screwed together.
But when the sun shines...temps ramp up 15 degrees with the clear polycarbonate roof.
Interesting info about the NPP 15 km away from your town.

We have a huge lake about 8km away, too far to moderate temps here...but obviously it's not cooling a NPP.
When we moved here 30 years ago, lake often froze solid a mile from the beach.
Hasn't frozen over in many years, climate change.

mnpalms, great temps for Trachies and yuccas.
Excellent protection job when outdoors is 0F!
That's a lot of snow!

Barb

Thanks guys

We got about 1 1/2" out of the storm,most of it went west/north,
still,windy as hell!

The fact it rained then got cold helped lock everything in place! 😀

Everything looks great but man this cold is locked in,nothing above freezing
as far as 15 days out.

Looks like a chance for more snow now too,what we lack in amount we make up for in
the persistence of the cold and minor snowfalls that won't melt anytime soon.

Nothing like 31" though 😯

Thanks for the update, Jim. Add photos when you get the chance. We love 'em.