I have south-east facing balcony with roof (sun from morning until around 2PM) and a south-west facing terrace (afternoon sun).
In first winter i have put my three small trees inside styrofoam box and i have placed the box on the balcony by wall.
Now that my collection is started to expand, styrofoam box is not a solution anymore, i am considering a cold frame that i could assemble in the winter and place it on the terrace or balcony.
Does anyone have any experiences or advice regarding this?
P.S. I have the tools and enough know how to build it myself, given the right amount of info.