Here is an easy method for getting rid of weeds in sidewalk cracks and between patio stones. I’ve found it to be very effective, and it’s completely non-toxic. I use boiling hot water for killing weeds in the gaps, and have found it to be very successful at removing just about all of the weeds. You can see in the pictures below how well it works.
I carry the boiling water into a coffee carafe with a lid and pour spout for safety. It wouldn’t be a safe idea to be moving open pots of boiling water. I wear enclosed boots for safety. I also make sure to pour it down low and away from myself, so it doesn’t splash up, while killing the weeds.
I just pour the boiling water on the weeds in the cracks, and most look like cooked vegetables a few hours later. Most weeds are dead the next day. I’ve found a few established weeds might need a second treatment, if they haven’t died in a few days.
I usually use this method of killing weeds in early summer, but it’s a little later this summer, so some of the weeds got a little big before the boiling water treatment. Within a few days, the weeds have usually crumpled into tiny dessicated pieces that disappear. A week or so later, you hardly see anything left.
Here are some before and after shots of the weeds that were killed in my sidewalk and driveway. The old weed on the top half, and the dead weed on the bottom half. I should have set up little signs, as after a day it was much harder to recognize individual weeds.
Here is a before and after photo of the weed killing in action. The bottom of the picture was taken 4 hours after the boiling water was applied. You can see how quickly this one died.
The bottom half shows the pineapple weed the day after applying the boiling water to kill the weed. This might not be the exact same pineapple weed as I had trouble matching up the dessicated leaves. Within a day they are dried up and breaking down after the boiling water kills them.
This shows another weed, knotweed, before and 2 days later, now dead after the boiling water application.
I usually apply the boiling water once in early summer, and that’s all that’s needed for the season. It’s highly effective at killing weeds. I don’t know if those with a longer growing season might need to do it more than once. I’ve been using the boiling water method for 3 years and have been very pleased with the results.
What I like about this method of killing weeds is that it is completely safe for the environment, your family and animals, with no toxic lingering effects. It is perfectly safe for pedestrians and pets walking down the sidewalk in front of my house. Using boiling water is the fastest, easiest and most non-toxic method for weed killing between patio stones, driveway sections and sidewalk blocks.