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I am in Windsor Ontario and I reviewed the forecast temperature and the average temperature and there was nothing under 10 'c. So I decided to open my winter projection. I am so glad I did. There were six branches that were full of mildow. I cut all six off the tree and the rest of the palms look good. I used 2" styrofoam and build a 2' x 2' x 8' enclosure. I place two heat lamps in the bottom of the enclosure. The lights were control by a temperature controller. I set the controller a 40'F. The temperature in the enclosure was maintained between 40 and 45'F. Was this temperature of 40'F too high?? Is this what caused the moisture and the mildow?? What temperature is the proper temperature to keep the enclosure at??

Nothing wrong with the temps,were the fronds touching anything???

Held4Ransom wrote:I am in Windsor Ontario and I reviewed the forecast temperature and the average temperature and there was nothing under 10 'c. So I decided to open my winter projection. I am so glad I did. There were six branches that were full of mildow. I cut all six off the tree and the rest of the palms look good. I used 2" styrofoam and build a 2' x 2' x 8' enclosure. I place two heat lamps in the bottom of the enclosure. The lights were control by a temperature controller. I set the controller a 40'F. The temperature in the enclosure was maintained between 40 and 45'F. Was this temperature of 40'F too high?? Is this what caused the moisture and the mildow?? What temperature is the proper temperature to keep the enclosure at??

Did the palm have natural sunlight? I still believe this is key.

Welcome aboard!

Nothing wrong with the winter temps inside your enclosure.

Even a small gap/air space at the top would have allowed humidity out.

Barb

I had the palm tied all together in a bunch. I guess, I should leave them all loose. I also have a small window in the enclosure that gives the tree some sunlight daily. Does any one have a automated vent to allow air into the enclosure.

Hi Ransom, i tied all the fronds too and i only have that problem one time, and i have 16 palms outside. You did ok with everything, i dont have any window in the box, cause the light go trough the styrofoam. I think the best way is to spray fongicide/bactericide on all leaves, that will prevent that problem. I will try that next winter. Dont forget something, during the growing season there is a lot of mushrom spore in the air and on the tree, bush, everywhere. So if we give a perfect environment to these spore to grow in mushrom, a enclosure box, heated and not ventilated is the place for. So if we spray before winter that will kill all these spore. Thats what i think...

Benoit
Expression tropicale

Hello Ransom -I have over 100 palms outside and all of my palms pulled through except a couple of new experiments that left 4-5 palms a little sad looking . I had 1 windmill palm that is planted in the shade have a major fungus problem so this does happen on occassion . 1 trick since I want you to keep it alive is to wrap the palm only with arbotex on the inside. No burlap or plastic wrap . Arbotex is like cotton and if you sweat in the summer a cotton t-shirt will dry easily. Same principal for palm, as it warms up outside and palm sweats it will absorb the moisture . The name ransom is familiar, did I sell you that palm last year.
good-luck
mike