The Persian Carpet Flower, as mentioned above, is a succulent that grows without leaves. The Persian Carpet Flower has only one known cultivar. Gardeners prefer to use one of the other methods. Although offset division is by far the easiest method for propagation, it's also the most cost-effective. Spring and Summer are the best times to propagate. Lithops do best outdoors or indoors? Nicholas Edward Brown called Lithops two Greek words, lithos ("stone") and opsis ("like") because of their close resemblance with stones.