Plum trees

Pleased to see my plum trees have buds on. They came as small, bare, rooted sticks and I stuck them into small pots and kept them by the house.  It seems the bad weather over Christmas hasn't harmed them.  Hope we don't get another dose of snow/ice. I will plant them into bigger pots in the spring.  Martyn Cox in "Big Gardens in Small Spaces" says that plums are one of the plants that sulk into pots, but these are supposed to grow only a foot high and weren't hugely expensive, so I thought worth a try.