I will say the new girl being an Italian red haired cougar is a hell of a combination. Some of her mementos raise concerns, however. I don't think I'm ready for another crazy girl yet.
Edit: I was able to harvest Yasu's flower. She may or may not be a chuuni, but she knows her stuff. Thanks to one of the garden bugs I was also able to find out that there is at least 1 dialogue for giving a girl an additional flower.
Edit2: Forgot to plant Raquel's. Her stage 1 is 1 racon's epice, cinema tickets and a game task.