Try to hand pull or hoe the broadleaf weeds.
Broadleaf weed control in liriope.
Once weeds emerge in beds postemergence options are somewhat limited expecially for broadleaf weeds.
Extreme care should be taken to avoid spray contact on the foliage of desired vegetation.
It kills the weeds in your lawn including many varieties of broadleaf weeds.
Preemergence and or pre plant applied herbicides for residual control of weeds in selected ornamental plants.
Department of agriculture hardiness zones 5 through 10.
The herbicide image kills nutsedge with imazaquin can be used to control sedges and it s safe to use on liriope.
For the grass you can use a grass specific herbicide such as grass b gone ornamec over the top etc.
How to kill weeds in liriope.
Weed control in ground covers is based on starting with a weed free bed mulching and the use of preemergence herbicides.
Imazaquin can be used on liriope muscari evergreen giant and silvery sunproof for control of some broadleaf and grass weeds as well as sedges and wild garlic pre and postemergence.
For grass weed escapes in lirope beds fenoxaprop clethodim fluazifop p butyl and sethoxydim are labeled for postemergence use for one or more species.
Liriope is in the lily family so will not be affected by the grass herbicide.
Fusilade ii is specifically labeled for use in greenhouses while ornamec is not.
Ut extension horticultural specialist carol reese recommends pulling the weeds to get rid of them and then using a pre emergent herbicide like preen to take.
Will not control broadleaf weeds or sedges.
If the weed is a sedge several applications should greatly reduce the population.
It also contains a pre emergent preventing new weeds from germinating in your lawn.
Weed beater complete is great for pre and post control of broadleaf and grassy weeds.
Be careful when using this herbicide around ornamental grasses.
There is not a broadleaf weed killer that you could use that wouldn t also harm the liriope.
Many annual and some perennial grasses including torpedograss.
Products applied for burndown of existing vegetation prior to planting and or post directed for weed control around existing ornamental plants.