According to H.B. Jackson, department head of plant industries at Clemson University, it is an invasive plant in other parts of the country. The plant has small blooms about the size of a thumbnail, orange-brown in color, and the blooms are in the shape of a woman's pocketbook. It is primarily an indoor plant with slipperlike flowers that vary from orange to yellowish to a red orange. You might want to check at Woodley Garden Center in Columbia or Head Lee Nursery between Seneca and Walhalla. I have a slope of planted lirope that I can't seem to control the weeds.
Weed growth is consistent even with a thick amount of pine straw.
Lirope is difficult to kill with any herbicide. You might want to find a rope wick applicator made out of PVC pipe. With this tool, you can mix Roundup and water and rub on the weeds. This eliminates spraying and damage to other plants.