Here is what I did with the containers from Walmart. I winter sowed seed into milk jugs, when the seedlings were ready to transplant I put them into plastic cups (from Walmart) and place them into the large container. If the nights were going to be cold I put the lid on. Wish I had taken another photo photo when just before transplanting into the beds. Best tomato plants I ever grew. No wilting or slowing down at transplant time.