PlantLife Online

Answer

Monkey grass is a broad category of evergreen/perennial grass like plants, the most common species are Liriope muscari, Liriope Spicata, Ophiogon japonicus. All of these species would do well along a walkway, they are controlled, easy to maintain and in warm climates look good year round. I personally enjoy the Ophiopogon nigrescens Black Mondo Grass. It has great dark leaves that will contrast other plants in the garden.