You finally got your home all ready to go for a backyard barbeque, and then you notice that there’s moss all over your backyard and on your roof! You pull out your trusty weed killer and start to wonder: will Roundup kill moss?
After reading this guide to killing moss, you will know the answers to:
- Will Roundup kills moss on your roof, driveway, sidewalk, pavers, walls, or in your lawn?
- How moss can cost you thousands of dollars in home repairs
- The best way to kill moss using the two most effective moss killing products on the market
- What’s the best way to protect your home from damage due to moss?
What is Roundup?
Roundup is the single most famous American brand of weed killer that millions of homeowners rely on to keep their lawns, driveways, landscaping, and everywhere in between free of weeds and grasses. It’s an effective product to keep weeds from damaging your sidewalk, driveway, patio, outdoor grilling area, and all your other outdoor spaces.
Roundup weed and grass killer was released by the Monsanto company in 1974, and has grown to become the most popular weed killer in the United States. In fact, Roundup is synonymous with ‘weed killer’ in the American lexicon. It’s no wonder why: Roundup is a potent weed control product that gets the job done.
Round is also well known for keeping crop fields weed-free, enabling Americans to enjoy high-quality fruits and produce low-cost. Remember the days when farmers had to pick weeds row by row by hand? Farmers would rather not. If it works for farmers, it will kill your own weeds dead.
Types of Moss
Moss refers to a variety of plants in the Bryophyta family of plants that grow in wet, shady conditions. Moss can grow on on all kinds of surfaces because they don’t have roots. Now you know why moss can overtake your roof if you don’t control it!
There are many different kinds of mosses, including tree moss, turf moss, and more. Although algae are often grouped with moss, it’s not a ‘true’ moss. The types of moss that will grow in your area depend on what plants are native to where you live, your climate, whether your yard has compacted soil, and surface conditions. If you have a serious problem with moss in your yard or garden, consider performing a soil test to better understand the problem that you’re facing.
Moss reproduces using spores, which allows it to spread over wide areas much faster than other plants, such as grasses with grass seeds. Since moss doesn’t have roots and their single-cell ‘leaves’ are typically interconnected, it’s much harder to kill moss effectively using traditional weed killers such as Roundup. While that’s a shame, there are highly effective moss-killing products on the market.
Why You Should Get Rid Of Roof Moss
Moss can grow on all the surfaces of your home if the conditions are right, including on your roof, sidewalk, patio, grill area, pavers, driveway, and lawn. A homeowner should be especially concerned with moss on exterior house walls and on the roof. This is because moss can damage your walls and roof, causing leaks in your roof and structural damage to your walls. This type of moss damage can be expensive to remove and repair, which is why it is vital to eliminate moss on roofs as quickly as possible.
Some people do cultivate moss as part of a backyard moss garden. These can be beautiful, but it’s important to ensure that the moss garden remains contained and is not allowed to spread. This is challenging as moss spreads using spores which the wind will helpfully blow in all the areas you don’t want it to, including on your walls and roof.
Outside of a garden, moss is not a pretty or enjoyable sight. Instead, it can lead to expensive moss-related damage, makes it hard to enjoy your home, and can even stop you from wanting to entertaining guests in your outdoor area. Plus, it can be challenging to sell a moss-covered home.
Answered: Will Roundup Kill Moss?
Will Roundup kill roof moss? As it turns out, Roundup is not very effective at killing moss on your roof or walls. It’s also not effective at keeping moss off your patio, driveway, grill area, pavers, and other outdoor areas.
This is because Roundup was not designed to kill moss. It is a weed killer that targets plants that transport the poison from their leaves, down the stem, and into the roots. Since mosses don’t have roots, have ‘leaves’ don’t move roundup to a moss ‘stem’, and spread using spores rather than seeds and pollen, Roundup is not effective at killing moss.
That said, if you are cultivating a moss garden and want to control the weeds growing around the moss, you should not use Roundup. While it doesn’t kill the moss outright, it can turn it brown. That’s because some types of moss turn brown when exposed to Roundup. No one wants a beautiful green moss garden to become an unsightly brown moss garden, especially when the moss is being used as a mulch alternative. While the moss will eventually come back, it is not the best product to use for moss gardens because you risk damaging the moss.
Will roundup kill moss on my roof? If you’re trying to get rid of moss on your roof, walls, patio, garden, grill area, driveway, pavers, or other outdoor areas, regular Roundup will not work. Roundup does have a moss killer version, but this may not be the best one for your type of moss.
How to Kill Moss
To kill moss, you’ll need to use a product that has a specially formulated moss killer chemical. Iron sulfate and ferrous ammonium sulfate are the chemical compounds that do kill moss and keep it under control. These are the active ingredients in some of the most effective products for moss control.
Moss killer products come in both spray and lawn pellet versions. Both types kill moss while each is suited better for different applications.
Moss killer in a spray form is best for killing moss on your roof, walls, patio, pavers, driveway, sidewalk, and other non-porous surfaces. The lawn pellet versions are best for killing moss that has become established in your lawn or garden. Both products will only kill the moss without harming your lawn or other plants. Simply apply the moss-killing products, wait for the moss to die, and remove the dead moss.
While some sites recommend other natural weed killer products or homemade vinegar weed killers for controlling moss, we don’t recommend going that route. What’s the point of using an inferior product that you have to keep applying over and over again or a homemade weed killer that doesn’t work at all?
Best Herbicide For Moss
Have a moss problem? Thankfully, there are two great products on the market that will kill your moss within a day and let you get back to enjoying your home and backyard.
Scotts MossEx: Best Moss Killer for Roofs, Walls, Patios, Driveways, Sidewalks, and Spot Treatment of Lawns
If you need to kill moss on your roof, walls, sidewalk, driveway, grill area, pavers, or other non-porous surfaces, we recommend using Scotts MossEx 3-in-1 Ready Spray, which is one of the most effective moss killers on the market. Each bottle kills up to 500 square feet.
Scotts MossEx product kills and then cleans the moss away from any of your non-porous surfaces, making it ideal for killing roof moss. You can also use it safely on moss on your lawn. Unlike other inferior moss-killing products it doesn’t use bleach, so it won’t kill the plants around your house, won’t kill your lawn, and won’t stain your clothes while applying it.
How to Use Scotts MossEx 3-in-1 Ready Spray Moss, Lichens, and Algae Killer
To use Scotts MossEx 3-in-1 Ready Spray, simply attach the bottle to a hose and spray it on the targeted moss. It kills the moss in hours, which will then begin to turn yellow and brown within a few hours. You can then wash the moss off by spraying it down with a hose. As an added benefit, this moss-killing product will protect the treated area from moss for months to come.
Lilly Miller Moss Out: Best Moss Killer for Lawns and Gardens
To kill moss quickly in your lawn or garden before it spreads further, we recommend using Lilly Miller Moss Out for Granules for Lawns. Lilly Miller’s moss granules are a fast-action, easy-to-spread lawn moss killer. Each 20-pound bag covers 5,000 square feet of lawn or garden.
How To Use Lilly Miller’s Moss Out for Lawns
Lilly Miller Moss Out for Lawns has 20 pounds of moss-killing granules that you apply by hand or using a broadcast lawn spreader.
To kill moss with Lilly Miller’s Moss Out follow these steps:
- Mow your lawn to expose the moss.
- Apply the product only when the soil is moist. Wait until after it’s rained or you’ve watered your lawn.
- Add the Moss Out granules to your broadcast spreader.
- Apply at a rate of 20 lb per 4,000 square feet of lawn using the appropriate application rate for your spreader.
- Water your lawn to accelerate the moss-killing process.
To spread the granules onto your lawn, use a broadcast lawn spreader or take care of spot applications by hand. Using a broadcast lawn spreader ensures that you distribute the granules evenly, cuts down on waste, and keeps you from having to touch the granules.
A broadcast spreader is the same thing you put fertilizer in and push around your yard. It’s just a bin for granules on wheels. You’re probably familiar with them but if you’re not, the Scotts Turf Builder Edgeguard Mini Broadcast Spreader is affordable and reliable. If you don’t already have one, you can buy one or borrow one from your neighbor.
After you have spread it out, the moss will begin to die in a day or so and it will also prevent the moss from growing back. You will have a healthy lawn again! Wait several days before mowing again. That’s because for best results you don’t want to disturb your lawn for several days after application.
Once the moss is dead, you can leave it as it or remove it. If you want to remove it, it’s easiest to pick it out by hand or using a rake. Then dispose of it in a yard waste bin or add it to your compost pile.
If you’re more concerned with spot treatment, Lilly Miller sells a Moss Out spray product. Just add the Moss Out liquid to your garden sprayer and then spot spray moss throughout your lawn and garden. It’s a quick, effective product to kill moss that’s trusted by gardeners.
Kill Your Moss and Enjoy Your Lawn
Will Roundup kill moss? No, it doesn’t, but there are two other fantastic moss-killing products that do! These two products are Scotts MossEx 3-in-1 Ready Spray and Lilly Miller’s Moss Out for Lawns product.
It’s important to quickly take care of moss on your roof to prevent it from becoming established and damaging your roof. Moss-damaged roofs lead to house leaks that are bad for your house, bad for you, and expensive to fix.
Killing moss in your yard will help your lawn grow its best, prevent the moss from spreading further, and allow you to enjoy your backyard. Plus, a moss-free property improves your curb appeal, making your house easier to market.
By using these moss-killing products, you’ll have a beautiful moss-free roof and lawn in just over a day! Contact us to find out other solutions for problems around your home!
It’s important to quickly kill moss when you first see moss on your roof, walls, driveway, patio, sidewalks, and lawn. Left untreated, moss will lead to expensive repairs, ruin your curb appeal, and keep you from fully enjoying your yard.
Although Roundup does not kill moss there are thankfully two very effective moss-killing products on the market that will take care of the toughest moss problems in a day.