Alright, group, I have a question. I am going to experiment with planting a Darlingtonia or two in a polystyrene cooler. It is a quality, 2-inch-thick-walled box used to ship temperature sensitive medicine. Just guessing, it has a potting space of 8" by 10" by 6". My logic says this will keep the roots cool through the day (I will also shade the foam box), but I worry the foam will hold on to any collected heat from the day into the evening and night time hours. This would be a huge bummer, as it would negate any evening temperature drop, no?
The box has holes in the sides about 2.5 cm from the bottom on all sides. I am using a course mix of peat, perlite, and fir bark and will expose the plants to morning sun.
I would have placed this in the pitcher plants sub forum, but I thought it had info that could be adapted to other genre of plants.