How to get rid of weeds in a lawn

Does mowing short kill weeds?

Mowing your lawn too short can actually make it more susceptible to weeds. When cool season lawns are cut too short, it becomes very weak and vulnerable to weeds. 3.5 inches is the best mowing height for most lawns.

What is the best weed killer that won't kill grass? Is it safe?

Fiesta weed control in Ontario.

Does weed killer kill grass?

There are weed killers that affect all plants (non-selective) and weed killers designed for lawns that do not kill the grass. (selective)

How to remove dead grass and weeds quickly?

Power raking, mulching with a lawn mower, topdressing and reseeding can quickly restore dead spots or lawns.

As a homeowner, you want your lawn to be lush, green, and healthy. Unfortunately, weeds can easily take over, making your lawn look unkempt and uninviting. Not only do weeds detract from the appearance of your lawn, but they compete with your grass for nutrients, sunlight, and water. Let’s explore some tips on how to keep some common lawn weeds under control while avoiding damage to your grass.

weeds in lawn


How to prevent weeds by fertilizing grass correctly?

Truly the best way to prevent weeds from growing in your lawn is to fertilize your grass correctly. Using fertilizer to promote healthy, thick grass is the #1 way to prevent weeds in your lawn. The best fertilizer will strengthen your grass and improve your soil, we recommend compost and organic fertilizer to promote the growth and health of your lawn.


How to get rid of a high percentage of weeds in my lawn with fiesta lawn weed killer

Fiesta weed killer uses iron to selectively control weeds without harming grass. This product has been shown to be effective in controlling a high percentage of weeds in lawns. Fiesta is not effective for certain types of weeds, such as crabgrass and nutsedge, nor can Fiesta weed control be used to prevent weeds on a lawn.


How to get rid of weeds in lawn with a Professional weed control service?

Professional weed control services employ a variety of methods to control weeds, including herbicides, lawn fertility, and overseeding. Lawn care professionals have the means and experience for controlling weeds that the general public does not. However, an over-reliance on herbicides can be harmful to the environment, so it’s important to choose a service that uses a wider strategy.


Annual and perennial weeds the difference:

Annual weeds complete their life cycle in one growing season, while perennial weeds can live for many years. Examples of annual weeds include crabgrass and chickweed, while examples of perennial weeds include dandelions and clover. Knowing your weeds is important to developing a strategy that targets specific weeds in the lawn.


The best time to spray weeds on your lawn:

It’s important to apply herbicides to weeds at the right time to avoid damaging your lawn. Ideally, herbicides should be applied when the grass is healthy and actively growing, as this will reduce the risk of damage. Green leaves are the best indicator of your lawn’s health, yellowing, brown or discolored grass should be improved before using weed control products on your lawn.


Are weeds bad for the lawn?

In general, weeds will compete with your grass for nutrients and sunlight. Moreover, some weeds have painful prickles or can worsen seasonal allergies. Weeds can also be unsightly to potential home buyers, decreasing the value of your property. That being said, some types of weeds such as clover can benefit lawns by fixing nitrogen into the soil or providing drought resistance.


Does corn gluten prevent weeds? (not really, not well)

Corn gluten meal is often touted as a pre-emergent herbicide by some in the lawn care community. However, its ability to prevent weeds is not well supported by scientific research, any observed benefits are most likely related to the fertilizer properties of corn gluten meal. In fact, corn gluten meal is not an inhibitor of seed germination; instead, it acts by desiccating seeds that have already germinated.

Despite these limitations, some individuals may find success using corn gluten meal for weed control. If corn gluten meal is working for you, there is no harm in continuing to use the product.


Controlling dandelions:

Dandelions are a common weed that can be found in lawns throughout North America. They are perennial weeds with yellow flowers that can produce hundreds of seeds per plant. Dandelions have deep taproots that can be unpleasant to remove.  Fiesta weed control is very effective on dandelions & false dandelions.

dandelion in lawn

What can make weed control difficult or impossible?

Several factors can make weed control difficult or impossible. Lawn diseases, drought, and soil compaction all weaken grass and make your lawn more susceptible to weeds. Furthermore, certain types of weeds may pose a challenge in terms of management due to their herbicide resistance or the incorrect timing of treatment.


Does Borax Work on Creeping Charlie? How Much Do I Use?

Borax has been touted as an effective weed killer for creeping charlie. Unfortunately, this has not been properly studied and there are no consistent application rates to recommend. In fact, using too much borax on your lawn can be harmful to your grass and the environment.

Borax can build up in your soil, and become toxic to your grass roots at high concentrations. If you have creeping charlie in your lawn, it’s best to use a proper weed control product in conjunction with other lawn care services.


Weed Killers Not to Use in the lawn:

Household products like vinegar, salt, boiling water, and gasoline, are not recommended for use on lawns. Using these products will cause damage to your grass and your soil. Illegal products like Par 3 and 2,4-D can be harmful to your children, pets, and the environment. These weed control products are not permitted in Ontario and can lead to hefty fines.


Should I bother Pulling Weeds?

Pulling weeds by hand can be a frustrating experience, many weeds will regenerate from small broken roots, making them difficult to completely eliminate. Additionally, pulling weeds can leave large holes in your lawn, which creates an opportunity for more difficult weeds to establish.

However, certain weeds like “bird’s foot” and “plantain” can be easy to pull after a rain with minimal lawn damage. Bird’s foot and plantain are resistant to fiesta weed control so we recommend pulling these weeds by hand when you have the opportunity.


Don’t Aerate or Dethatch When It’s Not Necessary!

Aeration and dethatching are important maintenance practices for healthy lawns, but they should only be done when necessary. Aerating or dethatching can weaken healthy lawns, making them more susceptible to weeds. Furthermore, some annual weeds like crabgrass and knotweed can have dormant seeds present in your lawn that germinate quickly in the newly disturbed soil. It’s best to consult with a lawn care professional to determine whether these practices are necessary for your lawn.


Fix Damage in Your Lawn

  • Bare spots and plow damage can create opportunities for weeds to take root and spread. To fix these issues, you can reseed the damaged areas and add a layer of topsoil if needed.
  • You should also manually remove invasive grasses like quackgrass and coarse fescue, before they cause lasting damage. Coarse fescue has such a strong bunching habit, it will create a bumpy grade that may become challenging to mow properly. Quackgrass is a difficult weed that secretes a substance toxic to surrounding plants.


“Read Your Weeds”

Certain weeds can indicate areas of your property where your grass is struggling. Annual weeds like crabgrass and knotweed may indicate disturbed or poor soil, creeping charlie or wild violets can indicate shady conditions and plantain may indicate soil compaction.

Before using a herbicide, it’s important to address the physical attributes of your lawn. This will ensure that your grass can replace weeds being treated. It’s important to only use the “weed reading” strategy as a reference, in truth, weeds can proliferate almost anywhere.


In conclusion

Keeping weeds under control in your lawn requires a combination of preventive measures and targeted weed control products. By following these tips and paying attention to the needs of your lawn, you can ensure that your grass

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