Hey Erik,
Very cool shelters. At least they are not too open to the elements.
You can plant pots for the summer, then take them out but they would be very dirty pot bottoms then..yuck! When I move I will plant the palms cus I heard they are safer in soil than pots, pots freeze so that makes sense.
I did ok in a sense last year. I triple bagged my Cycas, then toggle tied at the bottom then brought them under a cover which devides two bungalows. The only thing that happened was the fronds went yellow, still are. We hit -13 and on sunny days as the snow on the shed roof melted Icicles formed on the fleece.
I was stupid and left the Trachicarpus (small) uncovered and it pulled four spears at Easter time so I threw it in the recycle. I have a belter now. I also lost a UK Cordyline. I was at the kitchen window one day in winter and saw it litereally fall to one side.
Buy your farm, I don't even have the deposit...HAHAAHAHA
