Weed Control in Newly Laid Zoysia Sod

Zoysia sod planted in November isn't fully rooted yet, so avoid broadcast herbicides. Instead, spot-treat weeds by brushing glyphosate onto foliage with a foam paintbrush. Once the zoysia greens up fully in May, apply a selective herbicide containing quinclorac or sulfentrazone via hose-end sprayer. Long-term, the best weed defense is a thick, healthy lawn maintained with proper mowing, watering, and fertilization.