Organic Control of Nutsedge in the Lawn

Nutsedge Disappears with Soil Health

A homeowner pursuing a chemical-free lawn struggles with nutsedge. The respondent explains that nutsedge, like all weeds, thrives in poor soil. A totally organic program (no chemicals at all) builds rich, microbially active soil where weeds cannot survive. Within a couple of years, weeds stop emerging; any that appear die after a few mowings.

The Organic Regimen

Sugar (4–5 lbs/1,000 sq ft) feeds microbes. Deep weekly watering (6+ inches). Corn gluten meal for pre-emergent control. Alfalfa meal and lava sand for nutrients. Horticultural corn meal for fungus. Baking soda spray for foliar diseases. Beneficial wildlife (lizards, toads, snakes, earthworms) naturally controls pests. No synthetic products—ever.