Propagating Ophiopogon or Black Mondo Grass is similar to Liriope, but smaller leaved, which is cutting off the rhizomes extending out from the parent plant or by digging up the parent plant and dividing the roots into equally rooted transplants in the spring. Black Mondo Grass has pinkish blooms in mid summer, is deer resistant, evergreen down to Zone 6, grows to 4"-6" in height and prefers full sun but will take partial shade. Since it is expensive at big box stores, purportedly “rare,” the best option for homeowners is to purchase maybe a half a dozen and in five years they could have a goodly amount if divided every spring.