Most of my plants are directly planted in the decorative pots but I do have several that are in nursery pots set inside a more decorative pot. Depending on how tight a fit you can add a layer of stone, packing peanuts or some other filler to the bottom of the pot to keep the nursery pot up and out of the excess water that will accumulate in the bottom of the decorative pot. Depending on the fullness of the plant you can add a layer of mulch, decorative stone or moss on top of the potting soil to help disguise the nursery pot and give it a more finished appearance.
