How to Get Rid of Grassy Weeds? | DIY 8 Most Effective Ways to Control Grassy Weeds

How to Get Rid of Grassy Weeds

Grassy weeds like crabgrass, Dallas grass, and annual bluegrass are weeds that can sometimes be hard to spot because they blend in with regular turf grass. And the crowd and block your desired turfgrass by stealing nutrients, water and sunlight.

How to Identify Grassy Weeds

We’ll go over some simple techniques to identify grassy weeds and common tips to control them. The first thing you should do in any lawn care plan is to recognize what exactly you’re dealing with.

Uncaring identification can lead to wrong treatment methods that costing you time and money. Weeds come in several varieties and can usually be classified as either broadleaf weeds or grassy weeds.

Broadleaf weeds have widespread leaves with evident veins that branch out from a center vein. While grassy weeds are long and slim with veins that run parallel and like we’ve stated they look like grass.

grassy weeds
How to identify grassy weeds

After classifying the type of weed whether you have grassy or broadleaf weed. This is important because weed killer that works for one type of weeds may not be effective for another.

To identify the weeds, look at the blades of the weed that are shaped. Whether the blades have hairs, how the stem of the weed is composed, grass has spiky tips and the grass’s root system.

Noting all these characteristics will help you identify or narrow down the weed. Which weed you may be dealing with.

Inspection is the next phase of any good lawn care plan. Once you know what your weeds look like. Check around your property to confirm their presence to find grassy weeds in your yard.

Identify the Type of Grass in Your Lawn

It can help to know what kind of turfgrass your lawn is composed of and what it looks like. If you live in a cool-season region. Your lawn could be made primarily of Kentucky, Bluegrass, fescue, or even ryegrass.

If you live in a warm-season region, you most likely have St. Augustine grass. Check your lawn or garden beds for any unwanted patches of weeds.

How Grassy Weeds Grow

Weeds may grow, where the lawn is stressed or where conditions are favorable for weed growth.

You can find weeds where the soil is not watered properly and patches of grass. That experience a lot of heat stress and patches of grass. Where the grass has thinned due to insects, disease, or foot traffic.


Before starting any treatment be sure to wear your personal protective equipment. Especially when handling chemicals, keep all people and pets off the treated areas until dry.

Choosing the Herbicide for Grassy Weeds

You’ll want to start your weed control by removing any currently established weeds. Since no single herbicide can treat every weed without harming your lawn.

It’s important to pick the right herbicide for your situation. For general grassy weed control use a selective weed killer. Meaning they’ll kill targeted weeds without harming the lawn.

However, the fertilizer products can only be used over certain turf grasses. The cool-season grasses fertilizer will damage warm-season grasses.

scotts turf builder
killing weeds

No matter which herbicide you choose you can either broadcast your solution over the entire lawn. And you can spot-treat individual weeds.

Tricks & Techniques to Follow

We recommend you use a 1 or 1.5-gallon hand pump sprayer. Because they’re easy to use and versatile with their applications. Before you start you must get your treatment area’s square footage by measuring and multiplying the area’s length by its width.

You’ll use this to determine how much product you’ll end up needing to mix fill the sprayer half way with water and add your measured amount of product. Then fill the tank with the rest of the water up to the one-gallon mark.

Close the sprayer and shake to ensure an even solution pump the sprayer a few times to create a low-pressure spray proceed.

To broadcast your solution over your lawn or spot treat weeds be sure to spray on a calm day to avoid wind drift spray weeds to the point of wet.

Be careful not to over-apply. It may take a few weeks before you start to see symptoms in affected weeds. Treated weeds will curl and twist and change color from green to yellow to white before dying.

Prevention is essential to keeping weeds in check even after you’ve applied herbicides. The best way to stop weed activity is to make sure it can’t happen after you’ve removed your weeds. You can keep them from growing back by using a pre-emergent herbicide.

When applied properly, weed killer will form a chemical barrier that will stop weeds from sprouting. Some weed killers come in a granular form. So, you’ll need a broadcast push spreader.

To apply it, pour the proper amount of weed killer into the spreader and broadcast half your granules and parallel lines. Once across the area, then broadcast the other half at a perpendicular angle to cover the area in its entirety.

Watered the Lawn after Application

Once the weed killer is fully applied according to the recommended amount, water the lawn properly. And the most effective control can be achieved with at least half an inch of water within 14 days of application.

Herbicide application is the best way to keep grassy weeds from growing in your lawn. To maintain lush, healthy turfgrass.

watering the lawn

Use these additional tips to keep your native grass strong and prevent weeds from taking over.

Mow your Grass

Mow your grass properly to the proper height. Taller grass encourages deep root growth, strengthening your turf and crowd out weeds. You want your grass blades to be three to four inches tall. So, adjust your mower accordingly.

Water your lawn properly. It’s always better to water your grass deeply. Once or twice a week rather than a little every day shallow watering creates a shallow and weak root system.

Your lawn should have one to 1.5 inches of water per week. Whether by watering it yourself or with rainfall.

Racking & Patching

Improve your soil’s drainage by regularly raking and de-patching the top layer of soil to allow for more air circulation. Additionally, you can trim back overhanging tree branches to encourage evaporation and proper water retention.


Finally, keep up with the proper fertilizing schedule by maintaining a good balance of nitrogen, phosphorus, and potassium or NPK.

You’ll maintain strong turf grass, suppress other weeds from growing, and keep it healthy to fight against potential disease grassy weeds may be tough to spot before it’s too late.

But there are ways to control a weed infestation that’s gone out of hand with these professional products and tips.

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