Liriope has small notches on the side

Q: Last year most of the leaves of my liriope had small notches along both sides. What do you think this is? How can I solve it for this year? 

A: I think black vine weevil is the culprit. The adult insect makes characteristic notches on the leaves of rhododendron, azalea, euonymus, as well as other herbaceous plants. The larvae do more damage by feeding on the roots of these plants. The best control is a drench of systemic insecticide like imidacloprid.