Keep the plants together as long as possible. Most Yuletide-themed container gardens will have a mix of tropical foliage and flowering plants. Bright indirect light, room temperatures a bit on the cool side, and soil kept just modestly moist are conditions that will suit most of them Winter is not a good time for repotting. Clip off faded flowers to retain a neat appearance in the little plant collection, and wait until early spring to repot. Check to see whether the plants have been kept in their own pots when assembled into a container with peat or moss between the pots. If this is the case, you will have the option of removing a plant if it becomes unattractive and replacing it with a fresh one.