If you have a patio or path made of paving stones, you know how infuriating the endless battle against weeds is. Every little crack and crevice can harbor a seemingly unlimited amount of both broadleaf and grassy weeds. Trying to get rid of weeds between pavers is a thankless job that often leaves you with sore fingers and not much actual progress. Using a crevice weeding tool, which can be found on Amazon, can help get rid of weeds, but they often come back with a vengeance.
Why Do Weeds Grow Between Pavers?
The first thing we need to discuss is why weeds are growing between your pavers. You worked hard to install a beautiful path, patio, or walkway between raised beds but then a few seasons later there are weeds covering every nook and cranny. This is caused by accumulation of dirt and weed seeds. Over time, the cracks between your pavers collect dirt, dust, grass clippings and other organic matter. Weed seeds blow in from a neighbor’s yard or are deposited from bird droppings. Weeds dig in deep and fast. Before you know it, they’re too established to pull by hand. No matter how hard you try, the root system is still lurking deep in between the pavers.
1. Remove Existing Weeds Thoroughly
Before any preventative measures can take hold, you must address the weeds already present. A simple pull often isn’t enough, especially for deeply rooted varieties. A crevice weeding tool is an invaluable asset for this task. These tools, typically made of metal with a forked or hooked end, allow you to reach deep into the joints between pavers to dislodge the entire weed, including the root. Another option is a weed torch, like the Flame King torch available at Lowe’s, which uses a burst of flame to quickly kill weeds. Exercise caution when using a torch and always follow the manufacturer’s safety instructions. For larger infestations, a chemical herbicide specifically formulated for use in landscaping can be effective. Always read and adhere to the product label’s instructions and safety precautions.
2. Clean the Paver Joints
Once the weeds are removed, the next step is meticulous cleaning of the paver joints. Even after removing the visible plant matter, soil and debris remain. A stiff brush, such as a scrub brush with firm bristles, is essential for this. Scrub the joints vigorously to remove any loose dirt, dust, and organic material. For stubborn residue, you can use a garden hose with a spray nozzle to rinse the joints. Ensure all debris is removed, as any remaining material will hinder the effectiveness of subsequent treatments. This thorough cleaning creates a clean slate for weed prevention.
3. Apply Polymeric Sand
Polymeric sand is a specialized type of sand designed specifically for filling paver joints. Unlike regular sand, polymeric sand contains binding granules that harden when wetted, creating a stable, weed-resistant barrier. This is perhaps the most effective long-term solution for preventing weeds between pavers. You can find polymeric sand at most home improvement stores like The Home Depot. The application process involves sweeping the sand into the cleaned joints using a push broom. The amount of sand needed will depend on the size of the area and the width of the joints. Always follow the manufacturer’s instructions for the recommended application rate. The binders in the sand are activated by water, so it’s crucial to apply the sand when the pavers are completely dry.
4. Compact the Sand Properly
Proper compaction is crucial for ensuring the polymeric sand effectively seals the joints and prevents weed growth. After applying the sand, use a stiff brush to work it into the crevices between the pavers. This process helps to eliminate air pockets and ensures the sand makes good contact with the surfaces of the pavers. Avoid over-watering during this compaction phase, as excessive water can wash away the sand. A light sweep with a leaf blower can also help to remove any excess sand from the surface. The goal is to have the sand firmly packed into the joints without displacing it onto the pavers.
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5. Water the Sand Gently
The magic of polymeric sand lies in its ability to bind together when wetted. After compacting the sand, gently water the entire area using a hose with a shower nozzle attachment. Avoid using a high-pressure spray, as this can dislodge the sand and prevent it from binding properly. The goal is to moisten the sand evenly throughout the joints. The water activates the binding agents, causing the sand particles to cling together and create a solid, weed-resistant barrier. Do not saturate the area; a light, even sprinkling is all that’s needed. Allow the sand to dry completely before walking on the pavers.
6. Use Paver Edging to Contain Sand
Paver edging is a physical barrier installed around the perimeter of the patio or walkway to prevent polymeric sand from spilling out of the joints. This is particularly helpful on sloped surfaces or in areas prone to heavy rain. Paver edging comes in various materials, such as plastic, metal, or stone, and can be easily installed around the edges of the paved area. By containing the sand, paver edging ensures that the binding agents remain within the joints, maximizing their effectiveness. This prevents the sand from being washed away by rain or blown away by wind, which can compromise its weed-preventing properties.
7. Regular Maintenance and Inspection
While polymeric sand offers long-term weed prevention, some maintenance is still required. Periodically inspect the paver joints for any signs of sand erosion or weed growth. If you notice any areas where the sand has washed away or weeds have begun to sprout, reapply polymeric sand to those specific spots. This proactive approach will help to maintain the effectiveness of the weed barrier over time. It’s also a good idea to sweep the pavers periodically to remove any accumulated leaves, dirt, or debris that could harbor weed seeds. A little attention goes a long way in keeping your paver joints weed-free for years to come. With a little hard work this weekend, you can ensure you won’t have to weed your pavers or patio for years to come!
