prevent weeds from growing in cracks

Aside from being aesthetically unpleasant, weeds poking through sidewalks pose several threats to your asphalt, and family. If left unattended, the weeds will thrive, grow and can eventually create severe concrete deformations and heaving, which is only mended by tearing out the slab. Larger weeds are also tripping hazards, and will continue to reemerge after countless applications of herbicides. Manually eradicate the weeds before prepping the cracks and applying a quick-drying joint sealant.

Dig out as much of the weed as possible before cleaning out any remaining dirt or debris from the crack with water and a stiff wire brush. Allow the concrete to dry before continuing.

Pack the crack tightly with sand before filling it with a quick-drying joint sealant. Cut the sealant’s tip and insert it directly into the crack. Squeeze the product into the crack and overfill to allow for the shrinkage that occurs after drying.

Spray the weeds with a 5-percent acetic household vinegar. Concentrate the spray on the weeds, reapplying several times over a two- to three-day period or until the weed tops and roots are dead.

Allow the crack sealer to dry for 12 to 24 hours, or according to the package directions. Examine the crack and reapply, if necessary, to fill any remaining small holes or voids in the hardened product.

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Just be cautious with commercial weed removers . These chemicals can wash away in heavy rain and wind up in your neighbor’s yard or even local water systems. Don’t over-apply, and follow instructions on the package to make sure you’re keeping yourself, your neighbors, and local wildlife safe.

Pouring vinegar on weeds in your driveway or sidewalks will remove them over a week or two . You may have to apply the vinegar several times, though, depending on the weather. Rain can wash it away before it takes effect.

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You can get concrete or asphalt crack sealant at most hardware stores. Sealing cracks takes an hour or two, depending on how many you want to seal, and then a day for the seals to dry. Once you have your cracks sealed up, you have that much less space for weeds to invade.


Sealing cracks is the easiest way to prevent weeds. If there’s no place for dirt and seeds to collect, then there’s no way for weeds to grow.

There’s also the safety problem with boiling water . It can hurt you just as easily as it can hurt plants. If you’re pouring boiling water over a plant, there’s a serious risk that it will splash and hit you. Unless you have a power washer that can heat and spray water well away from where you’re standing, boiling water isn’t the best way to handle weeds.

Do you have some weeds that seem to come back no matter what? You might need to fight them with fire. A small propane torch can be effective at spot-removing weeds in stone patios, driveways, or sidewalks.

Yes, boiling water removes weeds . The temperature cooks the plants, including their roots in most cases. However, boiling water is difficult to use as a weed remover for more than a few weeds.

Whether you’re willing to work with your hands or you want weed remover to do the work for you, there are plenty of solutions. Using the right tools and weed removers helps you get rid of weeds permanently. Once you have the situation under control, you’ll be able to keep weeds away without much work at all.

After all, weeds are only a problem because they’re so good at growing where they shouldn’t. They pop up in the most inconvenient places – the middle or your garden, throughout your yard, and worst of all, between slabs in your driveway or sidewalk.

Once you’ve gotten rid of the weeds in the first place, you want to prevent them form coming back. There are a couple easy things you can put between slabs to keep your driveway or patio permanently plant-free.

Weeds leave your driveway and sidewalks looking a little ragged. Luckily, removing them can be simpler than you’d think.

The most immediately effective weed solution is glyphosate, which is the main ingredient in RoundUp. Of the commercial weed solutions, glyphosate is the safest. It’s also one of the most indiscriminate – it will remove any plant it touches. This includes your lawn and garden plants.

I hope this has helped you conquer your weed problem for good.

Add Salt.

Weeding after a heavy rain is the most efficient strategy. Soil is softest after a heavy rain, so plants are vulnerable to being pulled up, roots and all. After the next drenching rain, you’ll be able to clear out your weed problem for good.

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Note: if you live in a cold climate, you may note be able to seal every crack. Seams and edges between slabs are there on purpose to let the concrete expand and contract during temperature changes. Sealing these cracks can lead to more, worse cracks appearing over the spring thaw.

If you have many weeds, or if you have garden tools on hand, using a V-notch weeder can make things easier. These tools use a special notched design to pull weeds more effectively.

Instead of leaving some of the plant buried between the slabs, the V-notch weeder is able to fit in the crack and pull everything out. You can weed more quickly and successfully remove more weeds whole.

If you have just a few weeds popping up, standard hand-weeding can be effective. Grab some gardening gloves so you don’t scrape your fingers on the stone. Pull up the weeds carefully, getting as much of the root as possible. This will help prevent the weeds from growing back.

If you have cracks or gaps that you can’t or don’t want to seal, you can go salted-earth on them – literally. Plants can’t tolerate salt well at all. That’s why “salting the earth” was an army tactic hundreds of years ago: it kept people from growing food on that land in the future.

Use Vinegar as Weed Remove.

The problem is that water cools relatively quickly. If you’re using boiling water as a weed remover, you’ll need to have a kettle nearby constantly heating more. It’s probably the cheapest solution, but it’s difficult to use on more than a few plants at a time.

You can use this to your advantage in your war on weeds. Make a hot salt-water solution of one part salt to nine parts water, and pour it into the cracks and gaps where weeds live. This will soak in and remove your weeds over time. Just make sure none of your salt water runs off into gardens or your lawn. It will harm those plants, too! That’s why it’s important to be careful salting your sidewalks in the winter.

Finally, if nothing else has worked, you can use heavy-duty weed removers . There are several weed removers that linger for months or years where they’re sprayed. “Extended release” or “year-long” guarantees are a good clue that you have something that will stick around.

Weeding between concrete slabs or bricks can be a pain, because the root of the plant is safely nestled where you can’t reach it. That doesn’t mean the situation is hopeless, though. You have plenty of options to help make your driveway or patio weed-free.

Keeping your home looking well-groomed means getting rid of these problem plants. Luckily, there are strategies to help you remove weeds between slabs, as well as methods to keep them from growing back.

If you have a serious weed problem in your driveway or patio, glyphosate can be an effective solution. Soil enzymes neutralize it, so it’s unlikely to hurt plants that you don’t spray it on. However, it’s still best to apply it carefully so you don’t drip or accidentally spray plants you want to keep.

It’s a simple weed-removal method – just light them on fire. The heat should reduce the entire plant to the roots. However, it’s important to follow fire-safety guidelines with this method. Watch out for dry grass or sparks. You want to remove weeds, not burn down your house! This method is best used only for weeding in the middle of concrete slabs or patios, not in your yard or garden.

If removing the weeds doesn’t work, you can try chemical warfare. One organic trick is to use standard kitchen white vinegar as a weed solution. Vinegar removes most weeds through acidifying and destroying their roots.

Driveway and sidewalk cracks turn out to be surprisingly friendly places for weeds. These cracks can hold a considerable amount of soil and organic matter, a perfect bed for grass and weed seeds, which are often very tiny. And just below the surface of the paving there is often trapped moisture, and any plant that sends its roots down below the slab has access to it.

Some grasses and weeds thrive in the heat. Crabgrass, for instance, is a warm-season annual grass that thrives in driveway and patio cracks. Its seeds are very tiny and can penetrate the smallest cracks. Quackgrass is even more diabolical because it is a perennial weed that can survive even if just small pieces of root remain beneath the slab. If the exposed portion of the grass is removed, a new shoot will pop up in no time at all.

The reality is that pavement weed control is an ongoing landscaping maintenance task for homeowners, but the work is easier if you have a variety of workable strategies to choose from.

Here are some common, effective ways to control the weeds and grasses that infiltrate the cracks in paved surfaces. If a recipe calls for salt, make sure to limit its use to hardscape areas only; do not allow the salt to run into lawns and gardens.

In other words, the weeds and grasses that thrive in pavement cracks do so because they are genetically well adapted to the conditions created by concrete, brick, or asphalt paving. It will take repeated efforts using a variety of methods to control these invasive super plants.

Before Getting Started.

The Spruce / Jayme Burrows.

Successful weed control begins with knowing your foe's likes and dislikes and habits. In their own way, weeds are marvels of genetic evolution. s.

In cold weather, a dark-colored asphalt driveway absorbs sunlight and keeps the soil beneath warmer than the surrounding landscape. Some grasses and weeds can easily tolerate the salts in ice-melt products. Fescue, for instance, is a cool-season grass that is somewhat salt-tolerant and might have a good chance of surviving through the winter in a driveway. Sedge is a grass relative that tends to stay green in winter. And then there are the cold-happy weeds such as chickweed that seem to scoff at temperatures at which other plants would have long disappeared.

Thanks to this genetic tenacity, grasses and broadleaf weeds that sprout up through the cracks in the pavement are very hard to control. It is easy enough to pluck the top off at pavement level or sever them with a string trimmer, but unless you extract or kill the entire root, the plant often simply sprouts up again.

Grasses and weeds growing out of pavement cracks in sidewalks, driveways, and patios is a common annoyance. Sometimes it seems as though these unwanted plants grow even better in tiny pavement crevices than they do in the lawn and garden. This defies all logic since pavement surfaces are brutally hot and dry places where you might think that nothing could survive. But not only do these tenacious grasses and weeds survive, they alsoseem to positively thrive in this no man’s land of blistering hot pavement.

You will quickly recognize that various weeds have their favorite seasons, and are vulnerable to different control methods. The damp spring might be best suited to plucking weeds by hand, while during the dry months of late summer, chemical herbicides might be the better strategy.

You can stay on top of weed control by devoting a bit of time to the job each week. Many homeowners like to conclude weekly mowing or garden work with a few minutes spent plucking or killing the weeds sprouting out the pavement cracks around the landscape.

Weeds often come back, especially perennial weeds with strong roots. And there may be lots of weed seeds waiting in the cracks for their chance to sprout. Weed control is an ongoing task, but a bit of regular weekly attention will keep your landscape looking pristine.

Click Play to Learn How to Get Rid of Weeds.

When to Kill Pavement Weeds.