Sounds like a winner to me,but where would you get 2 inch Styrofoam,at a reasonable cost!

The cheapest styrofoam board that I can find is the 3" x 2' x 8' type that is designed to 'wrap' the exterior of basements. It has a slightly thicker and stronger consistency than styrofoam packaging and is designed to be more resistant to weather. The pale green color very quickly sun bleaches to a very pale blue. It costs $18/sheet here in Edmonton.

I have 2 enclosures started with a 2' below ground styrofoam frame. One is 10' x 6' and the other is 8' x 3'. I plan to build 'knockdown' styrofoam walls and roof. I am still trying to figure out a way to do this that will allow me to take everything apart in the spring and store it relatively easily without damaging the styrofoam. If I can get the enclosures to last 3 years the cost isn't that bad.

Both enclosures are beside buildings. The one with the Chamerops and Butia will be heated by a heat tape wrapped around copper pipe. I will be moving the potted Cycas revoluta, Trachys, Sabals and Washys into this enclosure for the winter. The small one containing the chinese fan palms and a rhododendron will not be heated.

Allen

Allen,
Can you drive half inch or larger rebar,into the ground 2 inches apart,then slide the 2 inch Styrofoam,in between the rebar.then go down 3 ft and do the same thing again,just to get a wall up.fill seams with silcone.

Thanks. I hadn't thought of rebar. I hadn't wanted to glue the sections together. Silicone along the outside of the edges should be enough to hold it together and still be easy to cut without damaging the foam.

Allen

Couldn't you adhere the insulating material to plywood and a 2"x2" frame? It would screw together in minutes. I wonder if an old skylight or polycarbonate panel for the roof would be better, allowing light in. It could be hinged to vent on milder days.

Cheers, Barrie.

Hello, well I live here in chicago and I saw one frame built around a palm at a conservatory last winter. It was made of 1 1/2 pvc tubes. It was a simple square shaped enclosure . The whole thing must have costed 10 dollars. Then the square pvc frame was wrapped tightly with clear plastic to let heat in. They sell rolls of green house plastic I guess would work. I personally have a cold frame I put up which is basically the same thing but made of metal tube. I am right now going to try the pvc enclosure around a sabal palmetto I have. So far its costed me only 20 dollars worth of pvc. Its some very strong stuff.

Here's an enclosure a buddy of mine did in Port Alberni here on Vancouver Island, He did it for his Chamaerops humilis which is likely fine without such a device. He used PVC tubing as suggested in the previous post. It comes apart in sections and assembles in minutes. It's anchored with re-bar and the cover is secured with bungy cords and can be pulled down in nasty weather.

Cheers, Barrie.

Thats exactly like what I have seen and what I am putting around my Sabal palmetto. It is easy make adjustmets for your application. Thanx Barrie thats a perfect example!

No problemo amigo! Let us know how you do with your winter enclosure.

Cheers, Barrie.

I thought about the PVC frame and plastic wrap. I am concerned about it being insulated enough. It would certainly be cheaper than styrofoam. What about using bubble wrap around a PVC frame? Or maybe if I made a type of "jacket" to put over during the extreme temps. Maybe out of old sleeping bags or something?

davery
I guess in colder climates there's more to consider. Start with a basic framework and insulate accordingly. Luckily for me all I need is an unheated canopy to keep the rain, frost and sloppy snow off the more tempermental palms.
Bubble wrap is good although more expensive than a double layered poly structure. Kind of like double glazed windows with an air gap between. A bit more involved to construct but somewhat cheaper. Colder climate folks add suplimental heat using various methods too. Let us kow what you come up with, or if you need more help.

Cheers, Barrie.