Can You Use Weed Killer On Synthetic Grass

Can You Use Weed Killer On Synthetic Grass? How To Stop Weeds Growing On Synthetic Grass?

The benefit of using Synthetic grass is ample, from high durability to weather-proofness to robustness. However, even your artificial grass can get affected by weeds. They can grow from the tiny holes under the grass surface.

Can you use weed killer on synthetic grass?

Yes, you can use weed killer on artificial grass based on the type of weeds that grow. Using weed killers will stop the germination process of weed seeds and kill the seeds and matured weeds quickly.

Read more details about “Can you use weed killer on synthetic grass?” Let’s move forward!

Can You Use Weed Killer On Synthetic Grass?


So, you are here to know about “Can you use weed killer on synthetic grass?” Since synthetic grasses are easy to install and require law maintenances, many gardeners are now installing them on their gardens. However, just because you have installed artificial grass that doesn’t mean weeds won’t grow.

As synthetic grasses are tough, sturdy, and super durable, you can use any type of weed killer as long as you are not using it on artificial grass.

Can You Use Weed Killer On Synthetic Grass?

Weeds can grow at any time if you give them scope. Before applying a particular weed killer, make sure you know the type of weeds that have grown in your garden.

Choosing a perfect weed killer will make the job easier, and it will take less time to kill weeds. If you don’t know which one to use, take suggestions from a garden expert. Or, go to a nearby garden center —they will suggest which one to operate best on the weeds your garden has.

If you don’t know how to apply weed killer safely on synthetic grass, take help from a family or friends who know how to do it. You should always wear the appropriate safety gear to ensure you don’t get hurt.

We suggest you use a natural solution initially. If natural solutions don’t work, then you can go for chemical-based weed killers.

Keep your eyes always open. It is best to remove weeds before they become grown-up. Matured weeds have deep root systems that can regrow even if you kill them. Thus, you should focus on eliminating tiny and young weeds before they grow.

Why Has Synthetic Grass Got Weeds?

Everyone knows it takes a lot of time and effort to take care of natural grass. You have to spend considerable money to retain their classic, greenish, and healthy appearance.

On the contrary, synthetic grasses are easy to maintain, and you don’t have to spend much money to take care of them for a longer time. Most importantly, their color and appearance won’t fade or change in different seasons. You just have to take a little care to ensure they retain their natural appearance.

Why Has Synthetic Grass Got Weeds?

Do you think germination for weeds only occurs in compost and soil? NO! It can happen at any place at any time. However, the good news is that artificial grass doesn’t have as many weeds as natural grass does.

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But you can’t underestimate the favorable environment systemic grass can create for weeds’ growth. They often encourage sprout for weeds. When there is enough moisture under the surface of artificial grass, and the environment is windy, it creates a perfect environment for weeds seeds to grow quickly.

The germination of weed seeds occurs when the environment is windy. As you know, the weeds seeds are very tiny, and they can move from one place to another quickly in breeze weather. The seeds land in the small holes of the artificial grass, and it grows slowly.

How do Weeds Grow in Synthetic Grass?

How do Weeds Grow in Synthetic Grass?

A weed seed has enough nutrition to survive at least for a few days at the initial stage of life. But once its root starts to grow, it needs a considerable amount of moisture to live. Its roots will thrive for water from the nearby spot.

Tiny weeds don’t need much water to survive. However, they still face difficulty when the weather becomes hot and no chance to occur rain. But, they are terrible and will make all possible valiant efforts to survive as long as they can.

Hopefully, you got a clear overview about “Can you use weed killer on synthetic grass?”

Mahagoni extract can be a good solution for these kinds of weeds. Read our latest article –

How To Extract Oil From Mahagoni | An Alternative to Pesticides

How To Treat Weeds in Synthetic Grass?

Annual and perennial are the two usual types of weeds that most of us know. Annual weeds only live for once, and they don’t regrow. On the contrary, perennial has a longer lifespan, and they regrow.

So, why do perennial weeds regrow? They have an extended root system, which helps them to regrow in every season.

Two main types of weed killers are available to use on synthetic grass: Contact Weedkillers and Systemic Weedkillers.

Contact Weedkillers

Contact Weedkillers are very few in number. Their main task is ruining the green leafy part of weeds, ultimately killing the whole weed plants.

Contact Weedkillers are more practical to use on annual weeds. One of the most popular, affordable, and easily accessible contact weedkillers is vinegar. It is called a natural weedkiller too.

Mahagoni extract can be a good solution for these kinds of weeds. Read our latest article –

How To Extract Oil From Mahagoni | An Alternative to Pesticides

Systemic Weedkillers

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The working mechanism of systemic weedkillers is a little bit different than contact weedkillers. Unlike contact weedkillers, the solution reaches the root system of weeds gradually from the plant leaves.

Systemic weedkillers are more powerful, and using them requires you to be cautious. Most of them contain chemicals to kill any type of weeds. They can kill plants of any size because they are so powerful.

Best Weedkiller For Synthetic Grass?

Using any water-soluble weedkillers is perfect for synthetic grass. When you add the solution to a particular volume of water, it becomes aqueous-based. They are ready to use instantly.

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A wide range of options is available to use on synthetic grass. Garden experts prefer to use systemic weedkillers over contact weedkillers due to their quick working efficiency.

Most systemic weedkillers either contain glyphosate or acetic acid as their primary ingredients. Though glyphosate is more potent than acetic acid, some gardeners prefer to use acetic acid-based weedkillers as they cause less harm to the environment and people.

‘Pump ‘N Go,’ Roundup, etc., are glyphosate-based weedkillers. On the contrary, RHS Weedkiller is one of the most reliable and popular choices as an acetic acid-based weedkiller.

However, acetic acid-based weedkillers are not effective for perennial weeds as they can kill the root system of weeds. Thus, weeds will regrow even if you use them.

How To Stop Weeds Growing On Synthetic Grass?

If you have installed synthetic grass in your garden or backyard recently, you might be stressing yourself to prevent weeds from growing. Keeping artificial grass weed-free is as simple as following these three basic steps.

Method 1 – Clean Up

How To Stop Weeds Growing On Synthetic Grass - Clean Up Synthetic Grass

Freshness looks good. Not only that, it keeps the synthetic grass safe from weeds. That’s why regularly clean up the grass using a stiff brush. You should give extra care during the summer season as grasses are more prone to have dust during this period.

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Make sure the brush you choose has synthetic bristles because they make the cleaning task easier. Don’t pick a metal-based brush. They are hard. They may damage the natural appearance of the grass.

Method 2 – Check Out The Close Zone

Are there any small and medium-sized plants in the nearby area of the synthetic grass? If yes, make sure to trim them off regularly. It will prevent them from overgrowing.

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Plants with unnecessary hedges and extra-long leaves will invite weeds in their close area. That’s why make sure to keep them always pruned and trimmed to ensure a fresh and neat appearance.

Method 3 – Use Weed Killer

Using weed killers prevents weed growth. You don’t have to use weed killers every month. Using weed killers once or twice per season is enough. Choose an appropriate and harm-free weed killer that won’t cause any problem for the soil, nearby plants, and synthetic grass.

How To Stop Weed Growth Before Installation?

Thinking of installing synthetic grass for the first time? Wondering what precautions you should take to prevent weed growth? Here are the things you should do if you want to stop weed growth before installation.

1. Sand Layer

How To Stop Weed Growth Before Installation - sand layer

Apart from dealing with weed, a sand layer can help you to make the sloped surface flat. Adding a thick layer of sand will stop weeds’ seeds from popping out under the artificial grass. Additionally, the existing weeds will struggle to survive as it creates pressure.

2. Weed Membrane

How To Stop Weed Growth Before Installation - Weed Membrane

If you don’t prefer to use a sand layer, a weed membrane is a perfect alternative. You will install it under the synthetic grass. Apart from guarding the artificial grass, it encourages a decent water drainage system.

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No chance of growing new weeds! Generally, most weed membranes are made of densely knitted cloths that can last for a decent period. Hence, you have no reason to stress yourself to replace it regularly.

3. Choose A Perfect Spot

As you know, weeds thrive best with a greater amount of sunlight. Choosing a shaded area to install synthetic grass will be a perfect choice if you fear weeds are likely to grow.

More moisture will be retained under the grass, creating an unfavorable condition for weeds. But remember, you have to either lay down a layer of sand or use a weed barrier to prevent weed growth.

What Are The Alternatives to Weed Killer?

Not all of us prefer to use chemical-based weed killers, even though it is synthetic grass. Don’t worry; you can use natural options. Here are a few practical solutions:

Boiling Water

Natural Weed Killers to Kill Weeds in Flower Beds

When you look for a free and easily accessible option, boiling water is a top list choice. Using boiling water will destroy the weeds right from their roots.

However, make sure you don’t pour it into other nearby plants. They can kill any plants. Be cautious while applying it. Wear all protective gear. You may burn your body.

Limit the Sunlight

How To Stop Weed Growth Before Installation - Limit the Sunlight

Do you know weeds hate shades? Do they thrive best when they receive a significant amount of sunlight? Blocking sunlight will prevent them grow, and they fail to produce their foods.

You can use borders, cartons, or similar things to make blockage objectives on the area where weeds have grown. Also, you can cover the whole area with several layers of old newspapers for multiple days. It will kill them gradually.

Corn Gluten Meal

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Do you know you can use corn gluten meal as an effective solution for weeds? Spreading the solution around the base will kill the weeds and make the area weed-free soon.

You may find corn gluten meal products from your nearby superstores or garden stores. Burying them from these stores might be a little bit pricey. But if you manage to get them from a mill, you won’t have to spend much money.

Does Synthetic Grass Get Weeds?

No doubt, synthetic grass doesn’t get prone to have as many weeds as natural grass does. But sometimes, weeds can grow from the base of the synthetic grass layer. The backing materials on the artificial grass may have many holes that encourage weeds’ growth.

Does Synthetic Grass Get Weeds?

Apart from that, the type of infill you have used while installing the synthetic grass may play a significant role in growing weeds. Choosing the wrong kind of infill may result in creating a favorable environment for weeds.

Why You Need Infill For Synthetic Grass?

Using infill for synthetic grass provides multiple benefits. Its superb functionality encourages safety for artificial grass.

So, what are the benefits you will get from using infill on synthetic grass? First and foremost, infill causes the artificial grass to bend down. So, the whole area of the grass doesn’t appear like a carpet. Thus, you don’t have to stretch it after increasing or decreasing the size. They always stay in their original condition.

Furthermore, as infill creates a heavy material layer, it doesn’t get prone to become matted easily. Even after walking or running over the grass surface all day long, they will remain in good condition.

There is an internal structure inside the synthetic grass. Infill supports the artificial grass backing system and prevents it from modifying the layout. It also provides high protection UV radiation and foot traffic.

How Many Infills to Use?

Why You Need Infill For Synthetic Grass?

How much infill you need to use depends on several factors:

  • Infill type
  • Grass-type
  • Expected foot traffic

If you want to install synthetic grass in your home, you will need 1-2 pounds of infill in every square foot. Most garden experts recommend using 2 pounds of infill as it provides a better finish. Add sufficient infill so that only half or a minor portion of grass is exposed.

However, many modern synthetic types of grass don’t need infill as their root systems are strong enough to stay in firm positions for a longer time. But if you prefer to provide extra protection and retain a modest look, infill will be a practical choice to consider.

What Kind of Infill Should You Use?


You can use different types of infill for your synthetic grass, such as MellowFill, Zeolite, silica sand, etc.


If you are looking for a higher-quality infill, the MellowFill is one of the top choices. It is made of ZOE, ZPT, Zinc, etc. This type of infill provides extreme protection against fungal. Its anti-fungal properties ensure no development of algae and mildew. In addition, it can remove and control various annoying smells that come from the synthetic grass.


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If you have pets in your home, Zeolite is an effective option for your synthetic grass. It is a special type of product that can stop ammonia buildup and spread the ammonia during the rain. The choice is affordable too.

Silica Sand

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If there is no pet in your home, silica sand is the best option you can choose. It can absorb different moistures and substances from the base of the synthetic grass. It is low-cost too.

Bonus Tips!

Synthetic Grasses are tough as they are made from artificial plastic fibers. However, they are not fond of oil. Most weed killers come in water-soluble. Plus, you won’t find any weedkillers from supermarkets that contain any oil.

Some weed killers contain salts that leave snowy white substances on the synthetic grass. But you don’t need to be concerned about them because they will be washed away after rain.

Sometimes, an imperfect setup may lead to the growth of perennial weeds on your synthetic grass. As perennial weeds come in every year, you want to use powerful weed killers such as Roundup to kill them.

Don’t worry; they won’t cause any problem for the synthetic grass. But make sure to read the product label thoroughly to apply the correct quantity. Additionally, don’t apply all the areas initially. First, use it on a small site to test it and make sure it doesn’t touch the fibers. Then, apply to the other location.

Finishing Up

Are you still wondering about “Can you use weed killer on synthetic grass?” Many of us prefer to install synthetic grass as they are easy to maintain, unlike natural grasses. Even so, you won’t ignore them.

Make sure you take all the necessary steps to prevent the annoying weeds from coming to your garden every year. Hopefully, the post has successfully shed a clear light on “Can you use weed killer on synthetic grass?” Happy Gardening!

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