Weeds are a nuisance every gardener has to deal with. Pulling them is tedious and tiring, and dousing them in chemicals is costly and toxic. Not to mention they have a tendency to come back, which means no matter what method you choose, you’ll be doing it again at some point in the future. Fortunately, there are a handful of natural ways you can kill weeds, and pretty much any other plant you want dead, that are natural, easy, and dirt cheap – some of them are even free.
4 Ways to Naturally Kill Weeds and Other Unwanted Plants
Gardening vinegar is a type of highly concentrated vinegar that has an acidity of 30%. This is far greater than the vinegars we consume. Long story short, it kills plants. The acidity fries them. In fact, gardening vinegar is so acidic, in many cases you don’t even need to use it at full strength for it to be effective – 15% is usually strong enough. You can also clean with it. Just don’t let it get mixed up with the vinegars you cook with.
If you really want to clear out an area and ensure nothing comes back, saturating the soil with salt water will do the trick. The sodium crystals clog up the plants’ roots until they can’t absorb water anymore and they eventually die of dehydration. The only problem is, after you do this, you probably won’t be able grow anything in that soil again for a very long time. That’s because the salt doesn’t evaporate with the water, so it stays in the soil. If you want to reuse that area in the near future, you’ll have to dig the soil up and replace it.
Pouring boiling water on a plant you want to get rid of is an easy and effective way to kill it. There’s nothing fancy or sophisticated about this method, the plant simply gets cooked to death. It’s no different than tossing fresh herbs into a pot of boiling water.
While it’s true that diluted urine makes a fantastic fertilizer, undiluted urine can kill most weeds, grass, and other unwanted plants. Full-strength urine, be it from you or your dog, is highly acidic. The acids in the urine simply burn the plant to death, which is why patches of grass turn a brownish-yellow color when a dog pees on the same spot over and over again. So the next time you’re staring at that patch of weeds you can’t stand, down a pot of coffee or a few cold ones, and then, you know… just make sure the neighbors aren’t peeking through their blinds. Or you could save it up and put it in a pump sprayer, like a civilized person.