The goal is to remove debris and sand from the joints while not disturbing the bedding layer that the pavers are resting on. You’ll need to continue to do this regularly to keep the weeds at bay.
Like the baking soda and vinegar methods, this is effective since salt dries out the plants to the roots and has a lasting effect.
The high concentration of salt in this formula prevents them from growing back.
Method #4: Pressure Washing
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.
For a low-cost solution, you can pull the weeds by hand and then pressure wash the pavers to get rid of roots. For this method to be effective, you should always pull the largest weeds by hand because they’re difficult to remove with a pressure washer.
But don’t worry, you’re not defenseless against weeds and other invasive plants.
Method #3: Salt
Salt is another natural product that you can use to kill weeds. Start by using a 3:1 mixture of water and salt and apply to the area very carefully. Keep in mind that saltwater will also kill other plants, so take care to apply it only to the weeds.
While the best way to get rid of weeds is to prevent them from growing in the first place, there are several ways to remove those that have already started to grow on your pavers.
What’s growing between your pavers: weeds, moss, even tiny trees? If you answer “all of the above,” you’re in the same boat as I was until recently. Seemed like my patio was more vegetation than bricks and I wanted to fix it … fast.
Salt. Applying salt to weeds between pavers sounds green and simple. However, heavy rainfalls have a way of spreading this substance from paved areas to the surrounding soil. And Gardening 101 says salt kills all vegetation, not just the kind you don’t want.
Treat extra-large areas