Can't you just glue some 4x8 sheets in insulation to the insides of the box? I know Coconut mike just uses insulation by itself in his videos.

Well for the past three years I had no issues with simple wood boxes. I think a few things led to this result. I found out one of my strands of lights fuse blew so I had one of my largest boxes (around 10 foot) with only one strand of lights working. Another thing is this box is a stand alone with the west side being totally exposed to the wind, my other four are grouped around a deck/pergola set up and I think the combination of that and slightly smaller boxes will look nicer once I open them up.

I am going to be investigating heat tape in the coming year as well. Whether I wrap with the tape and do some lights I'll have to decide. All I know is my electric bill this winter was a tad on the high side.

I don't think I'd have the die off of the foliage if I had them wrapped with heat tape. I also don't think the trunk was bothered by the cold as it's a pretty hardy tree (8-9 inch diameter trunk).

For those that weren't following Michigan weather this winter, it was one of the coldest and snowiest we've had in 30 plus years. Typically we'll get some snow and then a thaw and cycle that a few times over a winter, but from December through march it froze and stayed that way the entire time... just no breaks at all. Couple that with this is the first winter my big trees experienced and I'll be surprised if I don't see the same result on the other two.

Lastly, as for looking at doing insulation inside the boxes... I already have my hands full with storing all the wood for the boxes, adding insulation panels inside would complicate storage and building every year and get quite expensive. I'm in an area that sees very high winds which is why I've built some pretty heavy duty boxes. I've thought about doing 2 inch insulation boxes but I think the winds would just shred them over the course of a winter.

I've definitely got some work ahead of me to decide how I will progress each fall.

Doug, the box wasn't too big.
But there should be insulation inside.
Plywood alone isn't perfect for winter, especially if joints aren't caulked, etc.

Styrofoam comes in panels in various thicknesses.
You could measure and cut styro to fit each assembled box panel.
An inch of styro would've meant all the difference in the world unless you've got winds whipping through the corners.

Barb

Doug, the box wasn't too big.
But there should be insulation inside.
Plywood alone isn't perfect for winter, especially if joints aren't caulked, etc.

Styrofoam comes in panels in various thicknesses.
You could measure and cut styro to fit each assembled box panel.
An inch of styro would've meant all the difference in the world unless you've got winds whipping through the corners.

Barb

Hey barb
I've never had an issue the past few years with my first two palms doing this way. I will admit after the first winter I did purposely leave them somewhat porous to help them hardy up and keep the mold at bay that I had the first year.

I'll think about doing styrofoam boxes on the big boys as they should be able to load bear the the winds that come through my way.

Doug, did you have a remote thermometer inside there?
It'd be good to know what the minimum was in the box.

Yeah, mold is awful, but it can be managed to some degree.
My Washy fronds that get black mold are simply cut off in spring, didn't seem to hurt either of them.

Barb

Dang:( Sorry your palms took a hit...wishing you luck! Looks like some healthy green on some of those fronds, my guess is they'll be good as new soon:)

Doug, did you have a remote thermometer inside there?
It'd be good to know what the minimum was in the box.

Yeah, mold is awful, but it can be managed to some degree.
My Washy fronds that get black mold are simply cut off in spring, didn't seem to hurt either of them.

Barb

I did have a temp sensor in there, but it stopped registering once I closed up the box for the winter. This box is the farthest away from the back of my house, my guess is it was just out of range. This was the one I most wanted to monitor too because of it's size and location exposed.

Next winter will be different for me with this one that's for sure.

Dang:( Sorry your palms took a hit...wishing you luck! Looks like some healthy green on some of those fronds, my guess is they'll be good as new soon:)

There is still some green on them and the spears pushing out look good too yet, heck for all I know those may have pushed out while in the box... If anything, it certainly got a taste for what it's life will be like and will have hardied up a bit I hope. If my biggest issue is finding a way to keep the foliage green I think I'll be good in the long run.

keep us updated on that Trachy......I hope it survives. 8)

Dang:( Sorry your palms took a hit...wishing you luck! Looks like some healthy green on some of those fronds, my guess is they'll be good as new soon:)

There is still some green on them and the spears pushing out look good too yet, heck for all I know those may have pushed out while in the box... If anything, it certainly got a taste for what it's life will be like and will have hardied up a bit I hope. If my biggest issue is finding a way to keep the foliage green I think I'll be good in the long run.

Pushing spears is a very good sign! Keep us updated:)

Weather here is downright miserable, windchills to the low 20/teens, winds in the 20mph range and temps down to just below freezing. Really wish I left that box on now in hindsight. This winter will just not end where I'm at....

The fronds are looking quite worse for wear and even the spears are getting some browning on them. I put another strand of lights on it and wrapped it in a tarp for the evening to keep the rain/snow out of the crown area. This rain mixed with temps going down to to the hight 20s is the worst.

The fronds are looking quite worse for wear and even the spears are getting some browning on them. I put another strand of lights on it and wrapped it in a tarp for the evening to keep the rain/snow out of the crown area. This rain mixed with temps going down to to the hight 20s is the worst.

You did good by re-wrapping. Once it warms slightly towards the end of the week, give it a shot of fungicide. It seems like it's always the transitional temps that can wreek havoc on a palms, but once the low's are above 35, it'll be fine. It's really the low's that we have to be concerned about.

Keep an eye on it, my fronds held tight till this week. We hit 80F and all Hell broke loose. All of a sudden I have another pindo, chammy, and 3 trachies with spear pull.

Good luck,

Sorry man. Sucks that it fried up. Living across the pond from you, I really think you should get styrofoam in there somehow. It will help lower your electric bill and also insulate the palm better. I can even see a big hole where the cord comes in. I bet your palm saw extended periods of temps below 10 during the worst of our winter.

I hope it grows out of this fast for you.