Looking for yet more advice. I have a couple of Chrysanthemums planted in tubs (the variety are the ones with small flowers) and they are like shrubs. They are beginning to die back now. If I cut them right back will they come again next year or do I have to plant new ones?

I intend to wrap the tubs in insulation for the winter to prevent them from cracking, would it make any difference if I covered the mums as well in the hope of preserving them.

Also
My borders are still like forests but I want to plant daffodil and tulip bulbs. I am reluctant to remove the flowers as they are still flourishing. All I have read on the net says plant before the end of October but on the packets it says plant before the end of December. Which is correct? If it is October I will have to reluctantly thin these borders out which is such a shame.