Liriope is actually listed as a tolerant shrub to the Vantage Grass killer.
Unfortunately, once the liriope are up and thriving the only way to kill it is to carefully spot treat with a glyphosate product such as Agrisel Gly Pho-Sel Pro
. Agrisel Gly Pho-Sel Pro is a non-selective herbicide which means it will kill most types of vegetation including desirable turfgrasses, so care must be used when applying this product to the turf areas.
Answer last updated on: 06/25/2013