Posted: 09/03/2015 at 17:58
I have grown lilies in pots for many years, and some in the ground too. With pots the lilies can be moved to somewhat sheltered places in the winter if your area is prone to hard frosts, and you can put a pot of lilies in an area where something hasn't quite worked. After flowering they can be tucked away to be fed and nurtured until the following season. However, unless you are severely plagued with lily beetle, as so many of us are, they are longer lived in the ground in my experience. I have some that are coming up to 18 years in the same spot, after several years in pots. One other advantage of pots, if you do have lily beetle, and prefer not to use chemicals on the whole, you can use something horrible for the potted lilies and nothing else in the garden. We've had to resort to that a couple of times or have dead sticks intend of flowers.
Some of the smaller ones are good in pots as you can position them where you want to see them. Either way, provided you can keep them lily beetle free and out of the most severe wind they are pretty easy to care for.