Here is a quick comparison of the growth of super sweet tomato seedlings when they transferred into individual pots versus not. These seedlings are about 1 month old. Can you see that the seedlings that have their own pots are larger and happy looking? Now that it is getting warmer and sunnier it probably a better environment for them to grow. They are, however, a lot smaller than the starter plants that I saw at the store the other day. The same difference in growth was observed for the peppers as well.