If the flowers look like petunias then it is not a true lily (genus lilium). Lilies bloom on stalks with the flowers situated at the top area of the stalk. Sounds like another one of those plants that they attach the description lily to and confuse those who aren't as informed about the botanical descriptions of lilies. Examples include "corn lily", "calla lily", "voodoo lily" and the list goes on and on of plants inappropriately called lilies... I think you will need to find out more information to determined where this new plant is classified as you will need this information to learn it's growing conditions if you are considering getting it.