Tomato cages covered in plastic to extend season? I am thinking of wrapping my tomato cages in a double layer of plastic to allow for earlier planting. So essentially turning the cages into a temporary greenhouse or hoop house. Then when the air temperatures are hot enough I would just need to remove the plastic and the tomatoes will already be in place and ready to go. Has anybody done this? I am in zone 5 so am thinking I could get the tomato transplants out by the end of April if I protected them this way.