sentences:  Unlike most trilliums, it does not grow in leaf mold, preferring limy sandy gravel, crevices in limestone, or calcareous mineral soil.Like other "Trillium" species, "T. nivale" has a one-leaf vegetative stage followed by a three-leaf vegetative (juvenile) stage.After twelve or more years of vegetative growth, the plant finally reaches its three-leaf reproductive (flowering) stage.