If your house has old sidewalks like mine, keeping weeds and grass out of the cracks is an ongoing chore. And, as tempting as it may be to ignore the flora and fauna found in a sidewalk ecosystem, keeping those weeds at bay will prevent sidewalk cracks from getting larger.
For those of us who garden organically, there are three natural ways to get rid of those unwelcome weeds in the sidewalk cracks.
With a flat tip shovel. The fast way to remove weeds and grass from a sidewalk crack naturally is with a flat tip shovel. The tip of the shovel blade should be pressed against one end of the weed, than quickly pushed across the sidewalk crack with your foot. This slicing action will knock off the top of weed to that it’s level with the sidewalk. This isn’t a permanent solution however, but will work in a pinch.
Douse with a vinegar spray. The high acidity of pickling vinegar also makes it quite effective in killing weeds naturally. What I do to eliminate sidewalk weeds is heat up the vinegar in a non reactive pan, then decant it into a cheap plastic spray bottle. The weeds are then thoroughly doused with the warm vinegar.Do use care with this method of weed control since vinegar will kill everything it touches.
Boiling water. The boiling water method of weed control continues to be one of my favorite natural methods of getting rid of unwanted sidewalk weeds. I use my leftover canning water to tackle those stubborn sidewalk weeds, but using a regular tea kettle also works. Do take care however, that the boiling water doesn’t run down in to the lawn or the flower beds.
What you shouldn’t use to kill sidewalk weeds is salt. While salt is a highly effective weed killer in gravel beds, it will damage your sidewalks once cold weather and precipitation hits.