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Pre-Emergent Herbicides Can Hinder Warm-Season Grass Spread

How Weed Preventers Affect Stolon Rooting

Yes—common pre-emergent herbicides cause "clubbed" roots on Bermuda, zoysia, centipede, and St. Augustine grasses. The stolons (above-ground runners) cannot peg down into the soil, preventing recovery of thin or damaged areas.

Best Practice

Use pre-emergents only on healthy, dense lawns. If your turf is struggling or has bare spots, skip the weed preventer and focus on cultural practices that encourage thick growth.

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