One species, Liriope spicata, is a spreading form and the most aggressive grower. It extends quickly through underground rhizomes. The other type is Liriope muscari, which is a clumping form.

The two major species of liriope in our area are big blue lilyturf (Liriope muscari) and creeping lilyturf (Liriope spicata). They are only slightly different in appearance. Liriope muscari grows in a ...