Made of sodium chloride, rock salt pellets will destroy tree roots on contact. Copper sulfate is not safe for septic systems. Robert Morello has an extensive travel, marketing and business background. Based outside Atlanta, Ga., Shala Munroe has been writing and copy editing since 1995. When it dissipates, refill the holes with more. It doesn't take much rock salt to effectively kill plants in your yard. Or packing around roots with ROCK-Salt. Use an earth auger to dig a hole into the ground directly above the clog. Takes a few years, so enjoy the garden. killing a tree with root killer can cost thousands to remove a mature dying tree Re: How Much Rock Salt to Kill Roots? You can simply make a line of salt around the tree, and it will die. Because of this, you need to take measures to concentrate the salt around the tree to ensure you minimise the destruction around the tree. Pile mounds of rich soil around the trunk to about 2′ deep and plant a garden in that soil that gets watered regularly. Start drilling approximately five inches up from the base of the tree, and angle the drill bit in a downward position. Flushing a bit of rock salt down the sewer will kill any roots that have already made their way inside, while preventing those nearby from getting any closer. The sodium chloride draws out the moisture, consequently drying out the tree stump. Salt doesn't always stay where it's put -- it can be washed off into your flower bed or lawn, killing large swaths of plants you want to keep. It works relatively quickly, so if you don't notice the plants wilting in about two days, add a bit more rock salt around the plants' bases. A major problem with using rock salt even in small concentrations is that is tends to stay in the soil for years until water leaches it out. During this time, the chemicals will be taking effect on the invasive roots. Kid-Safe Chemicals to Get Rid of Dandelions, How to Landscape With Rocks on a Steep Slope, Reader's Digest: 11 Ways to Kill Garden Weeds, MSN Real Estate: 10 Homemade Weed Killers, Colorado State University Extension: Managing Saline Soils, How to Kill Weeds in a Driveway With Salt Brine and Vinegar. The sodium in salt will prevent a tree's flow of potassium and magnesium, both of which are vital ingredients in the making of chlorophyll.
Using salt is an effective way to kill a tree. Using salt is an effective way to kill a tree. Rock Salt. If you have a tree with roots that are approaching or have reached your sewer lines, they may be breaking their way through the pipe in search of the water supply within. Copper sulfate is not safe for septic systems. Repeat the process until 2 pounds of sodium chloride or copper sulfate have been flushed into the sewer where the tree roots have become an issue.

You can simply make a line of salt around the tree, and it will die. Use caution when working with rock salt.


Place 1/2 pound of sodium chloride or copper sulfate into your toilet bowl. Wear work gloves and eye goggles for protection, and always wash away unwanted rock salt with plenty of water. Pour 3 cups of water into a container, then add 6 cups of salt. Copyright 2020 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved. Sodium and chloride are both poisonous to plants. Once the tree dies, it is important to take steps to cut the tree down to prevent it from falling on its own. When combined in rock salt, they act as a sponge that sucks away any hint of moisture from vegetation, causing dehydration and death. If tree roots are in your septic system, you really need to seek professional help. Morello is a professional writer and adjunct professor of travel and tourism.

Monitor the solution. However, most everything around the tree will die as well. works great, cant kill trees. Pour the solution into the holes you drilled into the tree. Pour 3 cups of water into a container, then add 6 cups of salt. Rock salt is often less expensive and can be used to cover a larger area when you need it to kill plants. The sodium in salt will prevent a tree's flow of potassium and magnesium, both of which are vital ingredients in the making of chlorophyll. Pour 5 gallons of hot water into the pipe and allow the mixture to slowly drain into the soil where it will destroy the invasive roots and clear your sewer lines. It is important to note that it only kills the roots and not the whole tree. Sprinkle the salt around the base of the plant and allow it to naturally break down in the soil's moisture. Rock salt is a harsh chemical compound used primarily to melt snow and ice on roadways and sidewalks. Rock salt is a harsh chemical compound used primarily to melt snow and ice on roadways and sidewalks. Even high saline plants are susceptible to the effects of rock salt application. Rock salt is safe for use with either sewer or septic systems. Using boiling water helps dissolve the rock salt and kill the plants -- boiling water hurts their leaves just like it does your skin. Flush the salt down the drain so it clears the bowl completely. When combined in rock salt, they act as a sponge that sucks away any hint of moisture from vegetation, causing dehydration and death. Place a handful of rock salt into your toilet and flush it down once every few weeks or so. For small weeds, such as dandelions, you might only need three or four chunks. Do not use the toilet or any water that will drain into the sewer line for at least 12 hours. Rock salt is safe for use with either sewer or septic systems. The lack of chlorophyll will eventually kill the tree. Mark the location on the surface above the underground pipe.

Drill four to six 1/2-inch holes around the tree. The salt raises soil salinity, which dehydrates the roots of plants and keeps them from absorbing necessary nutrients. While it is usually recommended to completely replace the pipes, this is another less invasive method. Place another 1/2 pound into the bowl and flush again. Rock salt has numerous uses aside from melting snow in walkways, roads, and highways. Its application to areas where tree roots have become a problem, like breaking or blocking sewer pipes, can quickly kill them, making removal easier. Probably because nobody here has used rock salt to kill roots. The best places to use rock salt are those where you don't ever want plants to grow, such as cracks in your driveway or along fence lines.