Nutgrass in Zoysia: Sugar Feeds Microbes, Not Weeds

How Sugar Works

Sugar does not kill weeds directly. It nourishes beneficial soil microbes. As microbes enrich the soil, weeds (which prefer poor soil) decline naturally. Zoysia thrives in rich soil.

Application Protocol

• Rate: 1 lb sugar per 250 sq ft (entire lawn).
• Form: Dry crystals, broadcast by hand.
• Water in thoroughly—ants aren't attracted because sugar dissolves into soil.
• Frequency: Spring and fall; extra application during extreme heat/drought if lawn declines.

Watering Matters

Deep, infrequent watering (weekly, 1 hour) favors zoysia's deep roots over nutgrass's shallow ones. Poor watering habits encourage weeds.

Patience Required

Weeds diminish over 2–3 years as soil biology improves. No quick fix, but permanent solution.