Regularly sweeping and maintaining your paved patio will prevent seeds from settling between the stones as well.
Method #1: Baking Soda
To prevent weeds from growing in your paving, you can pour baking soda all over the paved area and then sweep it into the cracks. You should re-apply every four to six weeks. This method works the fastest during spring and fall but can still work during summer.
Method #3: Salt
You can use chemical herbicides to treat weeds on pavers as well, and there are two general types: pre-emergent and post-emergent. Pre-emergent herbicides work on plant seeds and seedlings, and they form a barrier to prevent germination.
Leave the flame-treated weeds in place as removing them encourage root seeds and bulbs below to germinate. The burnt weeds will compost naturally in place.
Leave for a day or two, check the weeds and repeat if necessary.
Weeds – they’re often the number one enemy of gardeners; and weeds growing up between pavers can be a constant and ongoing problem.
Use a portable gas torch and slowly apply to all the weeds growing up between the pavers.
Stop and take a look at the weed and understand how its root system works
If this approach isn’t grabbing you, Costa has more options!
Glossy leafed weeds will turn ‘matte’ when enough heat has been applied and smaller weeds will burn.
Hot Water Method
Stand (keeping good posture) then move to the next weed and repeat!
Fill a spray bottle with undiluted household white vinegar. (Typically, with a concentration of 5% acetic acid. Make sure to label the bottle and keep out of reach of children.)
One way of removing stubborn weeds from bricks is to pull them using mechanical tools, such as a crack scraper. Most home-improvement stores carry scrapers that contain long, L-shaped blades that reach into the cracks between bricks where the stem of the weed grows. By scraping along the edge of the brick, you can cut out most of the weed. One potential downfall of this method is that the roots often remain underground and may emerge again as weeds.
Weeds can pop up almost anywhere. They are invasive and require only a tiny crack to grow in between bricks. Weeds in your brick patio or walkway can be unsightly and unwanted. Fortunately, there are several methods for removing them once and for all.
Chemical herbicides are great for removing individual weeds within bricks, but it’s important to understand whether the herbicide will kill just the weeds or other plants as well. Herbicides that contain fusilade will kill grassy weeds without harming broadleaf plants near the bricks. Systemic herbicides, on the other hand, will kill anything they land on. These types of herbicides contain glyphosate. Carefully consult the label and instructions on the herbicide packaging to see whether it will attack only the weeds or also your lawn. Either way, herbicides should be applied only at the base of the weeds. Only apply as much of the product as the label calls for.
A natural solution to killing pesky weeds in bricks is to use regular table salt. Mix about one part salt to two parts water on a hot stove until the solution boils. While the solution is still warm, pour it directly on the bricks where the weeds appear. Be careful not to apply the solution to grassy or other areas that you don’t want to kill, as the salt will kill off just about any plants. Dry salt can also be placed directly on weeds, but you will need to add small amounts of water to dissolve the salt into the cracks.
If you are reluctant to use chemicals or other methods that might damage nearby grasses or other plants, most weeds can be removed by hand. To effectively remove weeds so that they won’t come back, the entire plant must be removed. Grab the weed at the lowest point, nearest the surface of the brick. Pull straight up to remove the entire weed, including the roots. Removing the roots is the only way to ensure that the unwanted weeds won’t come back.
Heath Roberts has worked as a professional reporter for several Colorado newspapers. He has covered breaking news and features for the "Denver Post" and other local publications. Roberts holds Bachelor of Arts degrees in both journalism and political science.