5 out of 5 Customer Rating
Scotts® MossEx™ is rated 3.6 out of 5 by 200.
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Scotts® MossEx™

5 out of 5 Customer Rating
Scotts® MossEx™ is rated 3.6 out of 5 by 200.
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Scotts® MossEx™

$26.99

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49019

Overview

  • Scotts® MossEx™ controls undesirable moss without harming your lawn
  • This moss killer contains nutrients to help develop thick, green grass
  • Apply this lawn care treatment in the winter or spring when moss is actively growing
  • Product is best applied when lawn is moist and tall grass has been mowed to expose low growing moss
  • One 18.37 lb. bag of Scotts® MossEx™ treats up to 5,000 sq. ft.

Active Ingredients

  • Ferrous sulfate monohydrate: 17.50%

Disposal Methods

  • If empty, place bag in trash or offer for recycling if available.
  • If bag is partly filled, call your local solid waste agency for disposal instructions.
  • Never place unused product down any indoor or outdoor drain.

Product Label

  • This is not the product label. Always read and follow the product label before use.
  • Download Label
  • Safety Data Sheets can be found at scottsmsds.com

Description

Scotts® MossEx™ controls moss without harming your lawn. After you apply MossEx™ it will attack undesirable moss, causing it to turn black and disappear. It also contains nutrients to green your lawn and develop thick grass. Apply Scotts® MossEx™ in the winter or spring when moss is actively growing. It is best applied when the lawn is moist and tall grass has been mowed to expose low growing moss. We recommend using a Scotts® spreader to apply this product. For Scotts® rotary/broadcast spreaders, use a setting of 2 ¼ for the regular rate or 2 ¾ for the heavy rate. For Scotts® drop spreaders, use a setting of 4 for the regular rate or 4 ½ for the heavy rate. For Scotts® Wizz®, use a setting of 3 ¼ for the regular rate and 3 ¾ for the heavy rate. If additional treatments are needed, wait 2 to 4 weeks between applications. Please note, grass blades may turn black temporarily; however, this condition will disappear after mowing. One 18.37 lb. bag of Scotts® MossEx™ treats up to 5,000 sq. ft.

How to Use

  • Check bag for spreader setting
  • When using a Scotts® broadcast or Wizz® spreader, make a perimeter pass of your lawn with EdgeGuard® on to protect non-lawn areas. Then, make parallel internal passes 5 ft. apart to ensure even coverage.
  • When using a Scotts® drop spreader, start 5 feet from the edge of your lawn and walk the outline of your lawn. Then, make internal passes across your lawn, overlapping the wheel marks to ensure uniform coverage.

Where Not to Use

  • Help keep our water clean. Do not apply near water, storm drains, or drainage ditches. Do not apply if heavy rain is expected. Apply this product only to your lawn, and sweep any product that lands on the driveway, sidewalk, or street back onto your lawn. Brush particles from cement, stone, clothing, or shoes to prevent staining.

Where to Use

  • On lawns with undesirable moss

When to Apply

  • Apply when lawn is moist and tall grass has been mowed to expose low-growing moss.
  • Apply during winter or spring when moss is actively growing.

How Often to Apply

  • Wait 2 to 4 weeks between applications

Frequently Asked Questions

KIDS & PETS

People and pets can re-enter the lawn once dry.

Help keep our water resources clean. Apply this product only to your lawn, and sweep any product that lands in the driveway, sidewalk, or street back onto your lawn.

Rated 5 out of 5 by from Moss problem Have used it before. Does what it says it will do.
Date published: 2025-03-16
Rated 5 out of 5 by from This is a fantastic product. Im an experienced gardener and I love this product. Why? most iron products come infused into large amounts of Nitrogen. Boo. I fertilize my yard already. i dont need that. the Calcium doesnt burn and its not going to kill my grass if i put down too much.Im a person who tries to give my yard the entire NPK range for health over the year. I also give my yard calcium. This product greatly reduces the amount i apply every year. The health of my yard is improving with every use. Im not masking poor health with surplus nitrogen. I live in the PNW where moss is a constant issue. I love the tiny particles. they break down and get into the soil with very little water. Its necessary to put moss kill down many times per year in the Seattle area. This product is a win/win for me.
Date published: 2024-10-02
Rated 5 out of 5 by from Kills moss It works! Within 2 or 3 days moss shows signs of dying off
Date published: 2024-09-22
Rated 5 out of 5 by from Killed Active Moss I like products that are ready to use and require no mixing. Scotts MossEx is easy to use and it killed active moss in mossy areas. I would recommend this product without hesitation. No doubt about it, I will buy it after trying it.
Date published: 2023-08-18
Rated 5 out of 5 by from Nice product This is wonderful product! It’s very effective at dealing with moss that sometimes stubbornly grows in the yard. It’s easy to apply and use and is another fine product from Scott’s. I would recommend to anyone who needs to deal with Miss issues in their yards.
Date published: 2023-04-27
Rated 5 out of 5 by from The Miracle of MossEX My entire yard was eaten up by moss. Over a two-year period and by using MossEX, I have been able to completely rid my yard of all moss. It is lush and thick with green grass today.
Date published: 2022-05-30
Rated 5 out of 5 by from Happy with the results We had moss growing on our walkway for a long time and didn’t know how to get rid of it. So, bought this and I am very happy with the results. Moss is something you don’t mess around with. They will grow on anything and everything. And the spores will spread far and wide, into your siding, shingles, etc. They are an invasive species. Tackle it right away before it becomes a problem throughout your entire property, especially your lawn. The picture I attached is from 2.5 days from application. First, you need to time this properly. I put this down with daytime temps were in the 50s/60s when moss is actively growing. And applied it in the morning. And the next part is very, very important for all moss control applications. Make sure there is no rain (and irrigation) for at least three days after you apply for maximum effectiveness. Because how this works is by essentially dehydrating the moss. I applied the MossEX on Friday morning, and the picture of yellow moss I posted was taken on Sunday evening. Results speak for themselves. If it gets green again, I will spray again. For lawns, I suggest Scotts MossEX granules, but you would need two applications, initial one at heavy setting and one more at regular setting, two weeks apart. This sadly needs to be an yearly thing in early spring when grass and moss is growing - mid-April to mid-May. Again, make sure there is no rain in forecast for three days and that you apply when the moss is slightly damp in morning so the granules stick better to the moss plant.
Date published: 2022-04-25
Rated 5 out of 5 by from Scott’s mossex excellent product Scott’s mosses worked like a charm wiped out the moss grass started growin the mossy spots within the nest week.Glad I found out about Scott’s mossex.
Date published: 2022-04-22
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