Grass between paving stones can be a common but annoying problem for homeowners. Not only does it compromise the aesthetic appeal of your patio or driveway, but it can also cause the stones to become uneven over time. If you’re struggling with this issue, you’re in the right place. In this comprehensive guide, we’ll explore why grass grows between paving stones, why conventional methods sometimes fail, and the best solutions to solve this problem permanently.


Why Does Grass Grow Between Paving Stones?

Grass finds its way between paving stones primarily because of the accumulation of soil, dust, and organic matter in the spaces between the stones. Seeds from grass and weeds in your yard can easily settle into these crevices, taking advantage of the nutrients and moisture there. Once they take root, they can be surprisingly resilient, making them difficult to remove. Thus, it’s important to tackle this issue before it becomes a bigger problem.


Conventional Methods and Why They Don’t Always Work

Many people resort to conventional methods like hand-pulling the grass or using salt to kill it. While hand-pulling may offer temporary relief, it often leaves the roots behind, leading to regrowth. Salt can be an effective grass-killer, but it can also negatively impact the soil and other surrounding plants.


  • Quick and easy
  • Inexpensive


  • Often provides a temporary solution
  • May cause harm to other plants or soil quality


The Best Methods to Get Rid of Grass Between Paving Stones

  1. Chemical Solutions – Herbicides can be effective in killing grass between paving stones. Choose selective herbicides that target only grass and weeds, without harming other plants. Always follow the manufacturer’s guidelines for application to ensure you’re using it safely and effectively.
  2. Non-Chemical Solutions – If you prefer a more natural approach, vinegar or boiling water can be effective. Vinegar contains acetic acid that can kill grass, but be aware that it can also harm other plants. Boiling water is another non-toxic solution; however, you’ll need to be extremely careful while applying it to prevent burns.
  3. Mechanical Methods – Using a weed wacker, garden knife, or specialised paving brush can also help. These tools allow you to physically remove the grass, down to the roots in some cases. Mechanical methods are most effective when combined with other solutions like herbicides or boiling water.


Preventive Measures

Once you’ve gotten rid of the grass, taking preventive measures can help keep it from coming back. Consider filling the gaps between your paving stones with polymeric sand, which hardens upon setting and inhibits the growth of weeds and grass. Alternatively, you can use sealants or set up physical barriers like edging to prevent seeds from settling in the gaps.

Frequently Asked Questions

  1. Is it safe to use chemical herbicides? – Using chemical herbicides is generally safe as long as you follow the manufacturer’s guidelines. Make sure to keep pets and children away from the treated area for the recommended period.
  2. How often should I check for grass between paving stones? – It’s a good idea to inspect your paving stones every month, especially during the growing season. Catching the problem early makes it easier to manage.
  3. What are the environmental impacts of the methods discussed? – Chemical methods may have some environmental impact, including potential harm to soil and water. Non-chemical methods are generally more eco-friendly but may require more frequent applications.


Grass between paving stones is more than just an eyesore; it can compromise the integrity of your paved surfaces. While traditional methods like hand-pulling or salting can offer temporary fixes, they often fail to provide a lasting solution. Utilising herbicides, vinegar, boiling water, or mechanical methods can offer more permanent relief. Whichever method you choose, remember that preventive measures are essential for long-term success. Happy gardening!