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Home » Lawn & Garden » Algae & Moss Control

Algaecide & Moss Killer

Green plants are usually welcome in a lawn or garden, but algae or moss can become an unattractive eyesore that takes over your patchy lawn or backyard pond. While these strange plants aren’t the same, they’re both non-parasitic, primitive plants that are often discussed together. Using chemical control is usually a last resort, but we will give you tips on how to remove algae and moss from your pond or lawn with our professional grade algaecide and moss killer.

See also: Fungicide, Lawn & Garden Pests, Weed Killer for Lawn & Garden

Items 1 - 21 (of 21 Total)   Sort By:
Cutrine Plus Algaecide
5 out of 5 stars (1)
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It is a double-chelated copper solution effective against a wide variety of algal species.

Crystal Plex Algae Control
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Algae Control for Ponds and Lakes

Crystal Blue Copper Sulfate
5 out of 5 stars (2)
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Granular Copper Sulfate / Algaecide

Southern AG Insecticides Liquid Copper Fungicide
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Southern AG Insecticides Liquid Copper Fungicide is the best way to protect your plants from all kinds of diseases.

Bayer Advanced 2 In 1 Moss & Algae Killer RTS
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Get rid of moss and algae easy with a hose-end sprayer applicator, eliminating the need for mixing.

Lilly Miller Moss Out For Lawns Concentrate
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Lilly Miller Moss Out For Lawns Concentrate is the most economical way to clear your lawn of lawn moss.

Lilly Miller Moss Out Lawn Granules
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Lilly Miller Moss Out Lawn Granules are a great way to clear your lawn of lawn moss. It covers up to 5000 sq. ft. of lawn and will kill your lawn moss problem. Lilly Miller Moss Out Lawn Granules also help your lawn grow, giving your lawn a fresh start.

Lilly Miller Hose N Go Moss Out Lawns
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Lilly Miller Hose N Go Moss Out Lawns is a great product, killing lawn moss quickly and keeping your lawn looking great.

K-Tea Algaecide
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K-Tea Algaecide for the use in slow moving or quiescent bodies of water

Clearcast Aquatic Herbicide
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Clearcast Aquatic controls vegetation in and around aquatic and non crop sites

Ferti-Lome Consan 20
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Algaecide, Fungicide, and Disinfectant.

Cutrine Plus Granular Algaecide
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An algaecide/herbicide ideal for planktonic and filamentous algae, Chara and Hydrilla. Has no general water use restrictions at label rates. Ideal for bottom growing filamentous algae, Chara and Nitella. Number 1 for Chara control.

Lilly Miller Moss Out Heavy Duty Cleaner
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Lilly Miller Moss Out Heavy Duty Cleaner is the best way to clear off all your outdoor surfaces of algae, mold and moss. Just apply Lilly Miller Moss Out Heavy Duty Cleaner and before you know it, all your outdoor problems will be solved.

Lilly Miller Moss Out Spot Treater
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Lilly Miller Moss Out Spot Treater is the easy way to rapidly clear out lawn moss from your lawn and flower bed. Just shake over the affected area and within hours, the moss will die.

Mainsail 6F Fungicide
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Mainsail 6F Fungicide provides broad spectrum control of 14 turf grass diseases/algae, over 40 diseases of field grown and container ornamentals, and tree/orchard crop diseases

Beach Rake
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Great for cleaning beach, grooming swimming areas and landscape work.

Weed Razer Express
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Weed Razer Express is a 30 inch Aquatic Vegetation Cutter.

Galleon SC Aquatic Herbicide
4 out of 5 stars (1)
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Galleon SC is a new selective systemic herbicide for large scale aquatic plant management

Swifter Sifter
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The Swifter Sifter cleans all the muck from your pond, lake, or beach front.

Sonar Aquatic Herbicide
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Sonar Aquatic Herbicide is a selective systematic herbicide for the management of aquatic vegetation


About Moss and Algae

What is Moss?

Moss is made up of fine branched, threadlike stems with very small leaves. It reproduces by windblown spores and makes it’s own food, meaning it does not steal any nutrients from your lawn. Moss will form a thick green mat on the soil surface. If you see lots of moss in your lawn, this is likely because the conditions are favorable for the moss, but not the grass. The moss takes up the space left by dead grass.

What is Algae?

Algae are often fondly referred to as “pond scum” because of the green layer that may cover much of your pond or water feature. This is a primitive plant with no roots that can be broken up into three categories: microscopic, filamentous, and attached-erect. Microscopic algae is very common; this algae is made up of tiny free-floating algae that gives a pond that characteristic green color you’d rather go without. A little bit of this algae can actually improve the life within and water quality of your pond, so don’t be quick to get rid of a bit here and there.

How to Control Moss in Your Yard

Moss removal can be difficult. The most thorough method is cultural control, since moss favors any combination of abundant shade, acidic soil, poor drainage, compacted soil, and low soil fertility. You can try a number of things for moss control: 
  • Eliminate each variable one by one. Reduce shade cover or plant more shade tolerant grasses.
  • Check pH of soil to get it to the proper acidity to suit your type of turf. 
  • Remedy your poor drainage or excessive irrigation problem.
  • Mow grass to the upper limits of its length requirement; longer grass can root more deeply which leads to healthier lawns.
  • Leave the moss be; it isn’t harmful and is a low-maintenance ground cover.
  • For moss control in lawns that may be taken over by moss and growth of other plants is being impeded, you can consider using a moss killer product. Look for products with potassium salt fatty acids, like Bayer Advanced Moss and Algae Killer

How to Control Algae in Lawn or Pond

Algae removal can be difficult, but management can become an important part of your pond maintenance. Most pond algae are a pea soup green color and are more unsightly than harmful. Blue-green algae (cyanobacteria) can produce toxins that can be very dangerous to the health of animals or fish that come in contact with the water. Red algae can also be dangerous. Contact your local extension office for help on how to kill algae like this, but aquatic dyes can help keep the algae from growing. Algae control for ponds with common planktonic algae and filamentous algae, try some of these steps:
  • Digging shallow areas of your pond deeper can help reduce the sunlight that helps the algae grow. This works the same as adding aquatic dye to keep sunlight from penetrating water.
  • Seeing a small amount of algae isn’t cause for concern; in fact, it helps the water quality and aquatic life by introducing more oxygen into the water. 
  • Reserve chemical treatment (algaecide for ponds or pools) for extreme cases of algae taking over your pond. Most aquatic algae killers contain copper: copper sulfate, copper chelate, or endothall. Use only the specific application rate and treat only a few sections at a time, as algae does not take long to kill algae, and killing a large amount at once can endanger the aquatic life in your pond. Please ensure you are choosing a pond algaecide safe for fish or other animals, especially if you are treating a koi pond.
  • In your pool, you can try to use a pool cleaner to get rid of any algae, and cover your pool when not in use.
  • Algae can also be present in your lawn, which is a sign of over irrigation, high rainfall, and low mowing heights. Just like with moss, it thrives when grass health declines. It can form a crust on top of soil and keep air or water from reaching soil. You can control lawn algae with the same products formulated for moss.


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