Joan from Gainesville, Ga writes
The most commonly used product to kill weeds and grasses in moss gardens contain the active ingredient glyphosate. Glyphosate is found in products such as RoundupQuickPro, Ranger Pro and Killzall Weed and Grass Killer. There are specific treatment steps of prewatering, application times of day, and postwatering that are vital to protect the moss. Due to the sensitivity of moss gardens, we recommend contacting a local Master Gardener in your county for a detailed plan on how to properly treat the garden. You can find your Master Gardener here.
Answer last updated on: 05/15/2019
