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Killing Kikuyu in Couch Grass: Test Baking Soda First

Spot-Test Baking Soda Spray

Mix 125g baking soda per gallon water. Test on small patch. Wait 10–12 days. If kikuyu dies and couch survives, scale up. Never apply broadly without a trial.

Why This Might Work

Sodium bicarbonate alters soil pH and salt levels, potentially affecting species differently. But it's unproven — test first.

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