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How to Prevent Moss on Siding and in Flower Beds

  • Transcript

    LESLIE: Nancy in Oregon needs some help with some spring cleaning. How can we help you today?

    NANCY: My siding gets green on it and so does the riser on my stairs. And north flower beds get lots of moss in them and I was wondering how to keep the moss out without harming the flowers.

    TOM: OK. So this is a very common problem and especially when you have shaded areas. When you don’t have a lot of sunlight getting to a space, typically it can get a lot of algae and a lot of moss.


    Now, one way to deal with this is with a mixture of bleach and water but that can definitely kill your flowers. There’s another product out there that is more effective and much safer. It’s called Wet & Forget.

    NANCY: Wet & Forget. Now, that’s for the stairs and the siding?

    LESLIE: Yeah. It really is a great product because what you do with it is you just sort of spray it on the surfaces, which would be your siding and the staircase, and then you just let it sit there and do its job. As it gets rained on, as it just sort of sits there, it works to get rid of the mold, moss, algae, mildew, whatever is there. And it works in a way that it sort of just stays there and will continue to work over time.

    You’re going to put it on. You’re not going to see it happen right away but give it a couple of days, a week and you’ll see it start to go away and then be gone. And it’s usually around 35 bucks a gallon or so and you can find it at Ace Hardware and other types of shops like that. And it’s a great product.

    NANCY: So you put it on full strength?

    LESLIE: Yes. Nancy, it’s a concentrate so what you need to do is you want to dilute it about 2½ cups of the Wet & Forget to a gallon of water. And again, you just apply it. Within a few days, you’ll start to notice it working and that’ll really do the trick.

    Now, for your flowerbed, I think what you really want to do is try to get more sunlight into the flowerbed, because that will deter the moss from growing. Obviously, it’s a shade garden so that’s kind of what happens in that space: you’ll get moss. And you probably have plants in there that do well or best in shade. So if you can get a little bit more sunlight in there, that will truly help to get rid of that moss.

    NANCY: Well, Wet & Forget sounds like a good thing to try.

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