Originally Posted by aruzinsky

You say that you want to transplant it in "summer months" which is after June 20. That would be correct because soil temperature lags air temperature by about a month and the growth rate of banana plants is mostly determined by soil temperature because banana meristems are located below the soil surface. Similarly, you would get a lot of growth in October because the soil is still warm. But, you can put the potted banana plant outdoors, in the pot, as soon as the danger of frost passes. I advise not to transplant from ground to pot except for suckers. It can be done but you will lose any growth gains that occurred while the plant was in the ground. Just dig up and pot the suckers.