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Q&A Home

David writes,

Is Cleary 3336F Fungicide useful for necrotic ring spotted lawn? Is it toxic to children on lawn?

Should I use before or after aeration of lawn? Do aeration plugs spread the necrotic disease?


When treating Necrotic Ring Spot grass fungus you should first dethatch the lawn vigorously. The thatch is how the fungus spreads. You can add the Cleary 3336F Fungicide, but it will not help without dethatching regularly. Also, lower the amount of nitrogen fertilizer that you give the lawn. The product is perfectly safe for children and pets to re-enter the lawn area once it has dried.  Usually 24 hours is advised before returning to the lawn.  As far as aeration plugs we are not sure of the answer to that question.  We would advise calling your local extension office for specific treatment questions for your area and climate.

Answer last updated on: 05/25/2010

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