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Moss Control #752395

Asked May 26, 2021, 6:21 PM EDT

Hi, I have a roof that gets mossy and would like to know what I can do to eliminate or at least suppress this growth. My gutters empty into pop up valves in my yard so whatever you recommend needs to not damage my landscaping. I prefer a powder or something like that that is easy to apply. Liquids are ok too if need be. Thanks.

Washington County Oregon

Expert Response

Thank you for your question.  The following OSU article should provide some options:  https://today.oregonstate.edu/news/maintaining-moss-free-roof-takes-some-effort

Good luck!

An Ask Extension Expert Replied May 26, 2021, 6:46 PM EDT
So either of these products will not harm my lawn/landscaping? The article doesn’t specifically say that.

Thanks 




Be kind. Do good work. Save the planet.

On May 26, 2021, at 3:46 PM, Ask Extension <<personal data hidden>> wrote:


The Question Asker Replied May 27, 2021, 10:04 AM EDT

The article cautions against getting either on non-target plants.  To the extent that is not followed, either will cause harm to other plants.  This website has more specific information about each product's characteristics:  http://npic.orst.edu/

I hope this is helpful.

An Ask Extension Expert Replied May 27, 2021, 10:37 AM EDT

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