Yes, there were a few others that used one plant for 2 grow battles. Like if you signed up for the Mephisto grow battle and you were growing under Cobs then you could enter in both battles if you wanted to. As for the first leg/second leg they are the beginning grow battles. Then there will be a final grow battle. So if you didn't place for the final grow battle in the first leg you have a second chance in the second leg to try and place for the final.