I would not suggest you use salt to kill any vegetation. It will kill weeds or whatever you want it to but the salt will descend into the soil and stay there for many years and NOTHING will grow in that spot/area for years.
A much better alternative is Round-up (and the cheaper knock-offs available). This is a much more effective solution and, most importantly, leaves no residual in the soil. You can plant your seeds or vegetation where you sprayed in a few days’ time.
Secondly, salt will move horizontally when heavy run occurs and perhaps move into area you don’t want it to be in. It will kill veggies and plants there and continue to kill for years. Salt may seem easy but it is very problematic in landscapes.
SAFER n ECO-FRIENDLY Alternatives to Using salt to Get Rid of Weed
Use the following instead of salt. They’re safer, more efficient and break down in the soil.
Will Pool Salt Kill Weeds?
Yes, salt will kill weeds when applied with water or direct over them. Vinegar works quite well too.
Simply mix with water and spray it on full strength. It works best when the sun is shining.
Note: Never overdose if you own plants in the area that you need to keep. Since the first rain will spread the salt.
READ MORE: How Many Chlorine Tablets for 10ft Pool ?
Will Swimming Pool Salt Eliminate Unwanted Plants?
Yes! When mixed with water plus vinegar and sprayed directly on plants, Salt dehydrates plants and disrupts the internal water balance of plant cells.
Salt Recipe for Weeds
- Creating a salt weed killer mixture at home is easy.
- Add table, rock or pool salt to water until it dissolves. Use a 3:1 ration of water to salt (a weak mixture).
- Add a bit of white vinegar and dish soap. They help make the weed killing effectiveness much better. It lowers the surface tension of the water, which allows the salt solution to be absorbed by the plant.
How to Use Pool Salts to Kill Weeds
To reduce the risk of other vegetation suffering from damage, use a funnel to direct the saltwater to the weed.
Will Pool Chlorine Kill Weeds?
Pool chlorine can kill weeds since chlorine is harmful to plants and trees.
How to Kill Plants with Pool Chlorine?
- Combine 2 tbsp. of chlorine bleach and 1 cup of water.
- Hold the spray bottle 8 to 12 inches from the unwanted plant. Spray the plant with the bleach water, being sure to completely cover the foliage.
- Inspect the plant each day.
- Store any unused bleach water solution in a cool location.