It’s a simple weed-removal method – just light them on fire. The heat should reduce the entire plant to the roots. However, it’s important to follow fire-safety guidelines with this method. Watch out for dry grass or sparks. You want to remove weeds, not burn down your house! This method is best used only for weeding in the middle of concrete slabs or patios, not in your yard or garden.
Finally, if nothing else has worked, you can use heavy-duty weed removers. There are several weed removers that linger for months or years where they’re sprayed. “Extended release” or “year-long” guarantees are a good clue that you have something that will stick around.
Use a Small Propane Torch
If removing the weeds doesn’t work, you can try chemical warfare. One organic trick is to use standard kitchen white vinegar as a weed solution. Vinegar removes most weeds through acidifying and destroying their roots.
If you have just a few weeds popping up, standard hand-weeding can be effective. Grab some gardening gloves so you don’t scrape your fingers on the stone. Pull up the weeds carefully, getting as much of the root as possible. This will help prevent the weeds from growing back.
I found the best and easiest way to kill weeds growing in gravel was to use weed killers containing Glyphosate. they kill the whole plant including the roots. It kills annual and deep-rooted perennial garden weeds, including grass, docks, nettles, willow herb, dandelion and bindweed in one application with no need to reapply. A single two Litre bottle treats up to 3332 sq/m. If you are clearing just a small area store it in your shed for next season.
The best and easiest way to kill weeds growing in gravel.
It is also available in diluted form under various brand names. However, instead of using these expensive cans or sprays. I use undiluted glyphosate and dilute it myself with water for clearing weeds from driveways and other large areas. It is super concentrated and easy to apply with a watering-can
Glyphosate kills the whole plant including the roots.
Cons; As I discovered years ago, spreading more small stones over the top of dirty gravel produces the perfect environment for weed seeds to germinate and thrive, also makes it even more difficult to pull them out.
All that sounds great, except for one thing – weeds. Because there is more flexibility and movement with a gravel path, it can potentially see some unwanted growth, as weed seeds sprout from the ground into the gravel surface. In addition, grass can also potentially sprout from the gravel areas.
So what can be done to keep weeds and even grass from growing in your gravel? Here are some weed control tips:
Some people “brine” their gravel pathways with salt water. This avoids the use of herbicides completely. However, this can have some side effects. While the salt can indeed kill weeds, it can also kill anything else in its path, including grass and gardens. So you do not want to use this on a surface where the salt water will roll down into areas you do want to thrive.