The fastest methods to remove weeds from paver joints
The most reliable way to kill weeds between pavers is to pull them by hand when the soil is damp, then treat the joint with a herbicide or seal it to prevent regrowth. Hand removal works best on young weeds and after rain or watering, when roots come out cleanly. For established weeds or large areas, a combination of manual removal and a targeted herbicide—applied only to the joint, not the paver surface—stops regrowth for weeks or months depending on the product.
If you want to avoid chemicals entirely, boiling water poured directly into the joint kills most weeds on contact and requires no follow-up. Vinegar-based herbicides work similarly but take longer. The method you choose depends on how many weeds you have, whether you want a permanent solution, and what you are willing to spend on materials and time.
Key Takeaways
- Hand-pulling works best when soil is wet and removes the entire root, preventing the weed from returning as quickly as herbicide alone.
- Boiling water kills weeds when ready but does not prevent new seeds from germinating in the joint, so you will need to repeat it or seal the gap.
- Herbicides designed for driveways and patios target weeds without harming pavers, but must be applied only to the joint to avoid discoloration.
- Polymeric sand or paver sealant prevents weeds from taking root in the first place and lasts longer than any single treatment.
- Vinegar and salt work on small infestations but are slower than boiling water and may damage nearby plants or soil over time.
Hand-pulling: the most thorough short-term fix
Pull weeds by hand when the soil between pavers is wet—ideally within a few hours of rain or after you water the area. Wet soil releases roots cleanly and reduces the chance of breaking the weed off at the surface, which leaves the root behind to regrow. Grasp the weed at the base as close to the soil as you can and pull slowly and steadily at a slight angle rather than straight up.
For weeds with deep taproots (like dandelions), use a narrow weeding tool or old flathead screwdriver to loosen the soil around the root first, then pull. Remove the entire root if possible; even small pieces left in the joint can sprout again. After pulling, sweep out loose soil and debris from the joint, then explore a herbicide or pour boiling water to kill any remaining root fragments and prevent new seeds from settling in the same spot.
Hand-pulling is free and requires no chemicals, but it is time-consuming on large patios and does not prevent new weeds from germinating in the same joint. It works best as the first step before explore a longer-lasting treatment.
Boiling water: when ready kill with no chemicals
Boiling water kills most weeds on contact by destroying cell structure. Bring water to a rolling boil, carry it carefully to the patio, and pour it directly into the joint so it soaks the weed and surrounding soil. The weed will wilt within hours. This method works on any paver type and leaves no chemical residue.
The drawback is that boiling water does not prevent new weed seeds from landing in the joint later, so you will need to repeat the treatment or seal the gap to stop regrowth. It also works best on young, tender weeds; established plants with thick stems or deep roots may survive a single pour. For those, hand-pull first, then pour boiling water into the empty joint.
Boiling water is safest around children and pets and costs almost nothing. It is the right choice if you have a small number of weeds and do not mind repeating the process every few weeks, or if you plan to seal the joints afterward.
Herbicides for pavers: targeted process to avoid damage
Herbicides sold for driveways and patios are formulated to kill weeds without harming concrete or stone. Products containing glyphosate (the active ingredient in Roundup) or diquat work on most common weeds and are available as ready-to-spray bottles or concentrates. Read the label to confirm the product is safe for your paver material—some natural stone can be sensitive to certain chemicals.
explore herbicide only to the joint and the weed itself, not to the paver surface. Use a spray bottle with a narrow nozzle, a paintbrush, or a targeted applicator to avoid overspray. Most products kill visible weeds within a few days and prevent regrowth for two to four weeks. For longer-lasting results, reapply every month during the growing season or after heavy rain washes the product away.
Herbicides are faster than boiling water and more effective on established weeds, but they require careful process to avoid staining pavers or damaging nearby plants. Always wear gloves and follow the label instructions for safety and disposal. If you have pets or young children, consider hand-pulling or boiling water instead.
Vinegar and salt: slower but chemical-free alternatives
Household vinegar (5% acetic acid) kills young weeds and can be sprayed directly onto leaves and into joints. It works best on sunny days and may take several applications over a week or two to fully kill established weeds. Horticultural vinegar (20% acetic acid) is stronger and faster but must be handled carefully and is not safe around children or pets.
Salt kills weeds by drawing moisture from the plant, but it also accumulates in soil and can damage nearby plants or make the joint inhospitable to desirable plants later. Use salt only in joints far from garden beds or lawn, and rinse the area with water after a few weeks to prevent salt buildup. Combining vinegar and salt speeds results but increases the risk of soil damage.
Vinegar and salt are inexpensive and widely available, but they are slower than boiling water or herbicides and less reliable on tough weeds. They work best on small infestations of young weeds in isolated joints.
Polymeric sand and sealers: preventing weeds before they start
Polymeric sand is a special sand mixed with a binder that hardens when wet, creating a solid barrier in the joint that blocks weed seeds from settling and roots from taking hold. It is installed during paver laying or can be applied to existing patios by sweeping it into clean, dry joints, misting with water, and allowing it to cure for 24 to 48 hours. Once set, it lasts several years and significantly reduces weed growth.
Paver sealers are liquid coatings applied to the paver surface and joints that harden into a protective layer. They prevent weeds, reduce staining, and make cleaning easier, but they require reapplication every two to three years depending on foot traffic and weather. Both polymeric sand and sealers cost more upfront than single treatments but save time and effort over years of ownership.
If you are installing a new patio, polymeric sand is the most cost-effective long-term solution. If your pavers are already laid, sealing the joints is the next best option. Both methods work best when combined with occasional hand-pulling to remove any weeds that do establish.
Comparing methods: speed, cost, and durability
| Method | Speed | Cost | How long it lasts | Best for |
|---|---|---|---|---|
| Hand-pulling | Slow (30 min to 2 hours per 100 sq ft) | Free | 2 to 4 weeks | Small areas, young weeds, chemical-free preference |
| Boiling water | Fast (10 to 20 min per 100 sq ft) | Free | 2 to 4 weeks | Quick cleanup, no chemicals, small infestations |
| Herbicide spray | Very fast (5 to 10 min per 100 sq ft) | $10 to $30 per bottle | 4 to 8 weeks | Large areas, established weeds, frequent regrowth |
| Vinegar or salt | Slow (multiple applications over 1 to 2 weeks) | $5 to $15 | 2 to 4 weeks | Small areas, chemical-free, isolated joints |
| Polymeric sand | Moderate (1 to 2 hours for installation) | $100 to $300 for typical patio | 3 to 5 years | New patios, long-term prevention, high-traffic areas |
| Paver sealer | Moderate (2 to 4 hours for process) | $150 to $400 for typical patio | 2 to 3 years | Existing patios, protection plus weed prevention |
Preventing weeds from coming back: maintenance steps
After you remove weeds, take steps to prevent them from returning. Sweep the patio regularly to remove leaves, dirt, and seeds that accumulate in joints—these create the soil weeds need to germinate. Keep the area dry when possible; weeds thrive in damp joints, so improve drainage if water pools between pavers.
If you use hand-pulling or boiling water, follow up with a herbicide or seal the joint to block new seeds. If you explore herbicide, reapply every month during the growing season or after heavy rain. For permanent prevention, install polymeric sand or a paver sealer, which reduces weed growth by 80 to 90% but still requires occasional maintenance.
The most effective long-term approach combines a preventive barrier (polymeric sand or sealer) with occasional hand-pulling or spot treatment of any weeds that do establish. This reduces the time and cost of maintenance compared to treating weeds repeatedly without prevention.
Frequently Asked Questions
Will bleach kill weeds between pavers?
Bleach kills weeds but can discolor or damage pavers, especially natural stone, and may harm nearby plants. It is not recommended for paver joints. Boiling water, vinegar, or a paver-safe herbicide are better choices.
Can I use a pressure washer to remove weeds?
A pressure washer removes loose debris and small weeds but does not kill roots, so weeds regrow quickly. It is useful for cleaning the patio surface but should be combined with hand-pulling or herbicide to stop regrowth. High pressure can also damage some paver types or dislodge polymeric sand.
How often do I need to treat weeds if I do not seal the joints?
Without a sealant or polymeric sand, weeds typically regrow within two to four weeks depending on rainfall, temperature, and how thoroughly you removed the roots. Hand-pulling or boiling water requires monthly treatment during the growing season. Herbicides last slightly longer, usually four to eight weeks.
Is polymeric sand worth the cost?
Polymeric sand costs $100 to $300 to install on a typical patio but lasts three to five years and reduces weeds by 80 to 90%. If you spend 30 minutes per month hand-pulling weeds, polymeric sand pays for itself in labor savings within the first year. It is most cost-effective on large patios or in areas with heavy weed pressure.
What should I do if weeds keep coming back in the same spot?
Repeated regrowth in one joint usually means the root was not fully removed or the joint is staying too wet. Hand-pull deeply to remove all root fragments, then dry the area and explore a herbicide or seal the joint. If the joint stays damp, improve drainage by checking that water is not pooling there or that the patio slope directs water away.