How to Stop Weeds Growing Between Pavers

The best way to learn how to stop weeds growing between pavers is to understand one simple fact: the weeds do not grow up from under your patio, they sprout from seeds that land in the joints. Once those gaps fill with dust, soil, and moisture, seeds settle in and take root. Therefore, the lasting fix is to seal those joints and keep them clean. Below, we walk through exactly how to clear the weeds you have and stop new ones from coming back.

Why Weeds Grow Between Pavers in the First Place

Weeds in pavers come from above, not below. Wind and foot traffic carry tiny weed seeds onto your patio, and those seeds drop into the small gaps between the stones. There, in a warm, damp, sunny spot, they germinate and grow.

The problem usually starts when the joint sand washes out. As that sand erodes over time, it leaves open space where seeds collect. As a result, even a perfectly installed patio will eventually grow weeds if the joints are not maintained.

A few conditions make it worse:

• Eroded or missing joint sand that leaves open gaps
• Standing water from poor drainage that keeps joints damp
• Built-up debris like dust and leaves that act as a seedbed
• Wide or uneven joints that trap more seeds

How to Stop Weeds Growing Between Pavers Step by Step

Stopping weeds is a two-part job. First, remove what is already growing. Then, seal the joints so new seeds cannot take root. Here is the process.

1. Remove the Existing Weeds

Start by pulling the weeds you can see. Pull them when the soil is damp so the roots come out cleanly, since broken-off roots simply grow back. For stubborn growth, boiling water poured directly on the weeds kills them quickly without chemicals.

2. Clean Out the Joints

Next, clear the old sand and debris from between the pavers. A pressure washer works well for this, but keep the pressure moderate and the nozzle back from the surface so you do not damage the stones. This step removes the rooting zone where weeds establish.

3. Fill the Joints With Polymeric Sand

This is the most important step. Polymeric sand is a blend of fine sand and binders that hardens when you wet it, forming a solid joint that locks the pavers together and blocks weed seeds. To apply it:

• Make sure the pavers are completely dry and you have a rain-free day.
• Pour the sand over the surface and sweep it into the joints until they are full.
• Tamp or tap the pavers so the sand settles and packs down.
• Lightly mist the surface with water to activate the binders.
• Let it cure and harden, usually over 24 hours or more.

4. Seal the Pavers

Finally, apply a quality paver sealer. Sealing adds another barrier that keeps moisture and debris out of the joints while protecting the surface and boosting curb appeal. Together, polymeric sand and sealer create a long-lasting defense.

If your patio has shifting stones, washed-out joints, or recurring weeds, it may be time for a professional refresh. Our professional paver patio and driveway services handle proper base prep, jointing, and sealing so weeds have nowhere to take hold.

Simple Habits That Keep Pavers Weed-Free

Even with sealed joints, a little upkeep goes a long way. In fact, regular maintenance is what keeps weeds from ever gaining a foothold. Build these habits into your routine:

• Sweep often. Removing seeds and debris before they settle is the easiest prevention there is.
• Rinse off buildup. Keep dust and organic matter from collecting in the joints.
• Check drainage. Make sure water flows off the patio instead of pooling in the gaps.
• Refill joints as needed. Top off polymeric sand when you see it wearing down.

Because polymeric sand erodes slowly over the years, refreshing it periodically is normal and keeps your defense strong.

When to Call a Professional

Some weed problems point to a bigger issue. According to Clemson Cooperative Extension, once cracks form in a hard surface, resealing the joint is really the only way to keep weeds out for good. So if you notice these signs, it is worth bringing in a pro:

• Pavers that shift, sink, or rock underfoot
• Joints that wash out again and again
• Water pooling on the surface after rain
• Weeds returning no matter how often you pull them

In these cases, the base or drainage may need correcting, which is work best done right the first time.

Keep Your Patio Clean and Weed-Free

Learning how to stop weeds growing between pavers comes down to sealing the joints and keeping them clean. With polymeric sand, a good sealer, and a little regular sweeping, you can enjoy a crisp, weed-free patio for years. Gladiator SOD & Landscaping handles paver patios, driveways, and full hardscape projects from start to finish with no subcontractors.

Contact us today for a free on-site estimate and let us help you protect your outdoor space.