I was given a potted Chrysanthemum in May this year. As the display was made up of five plants I planted them in the garden after they had finished flowering. I am pleased to say they are now flowering again and look rather splendid. As they were originally meant as an indoor plant what should I do with them after they have finished flowering outside? Do I leave them where they are and just see what happens to them over winter. Any advice would be welcome.