How to Keep Tree Roots Away From the Septic Tank
Tree roots can invade and damage your septic tank, along with the sewage pipes running from your house to the tank. Ideally, you shouldn't plant trees near your septic tank. Depending on the size and species of tree, you should plant the tree a distance away from the septic tank that is twice the width of the branches or "crown" at maturity. If you have existing trees that have roots growing toward your septic tank, you can take certain measures to keep the roots from damaging the tank. Does this Spark an idea?
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Things You'll Need
- Root killer
- Garden trowel or hole-borer
- Chainsaw and shovel (optional)
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Instructions
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Pour the recommended amount of root killer down the drain or toilet that is closest to your main waste line, which is the main pipe that carries waste to your septic tank. Do this once each year (only if tree roots have invaded your septic tank or sewage line) and follow the directions on the label exactly. Use a root killer product that doesn't contain copper sulfate and is both safe for your septic system and the environment.
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Dig a line of small holes into the ground about halfway between the septic tank and the tree. Bore the holes using a small garden trowel or a hole-borer, spacing the holes about 6 inches apart.
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Pour the root killer into the holes. Follow the directions on the label exactly.
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Fill the holes with soil. Repeat this process once or twice per year to prevent the tree roots from growing and reaching your septic tank and sewage line.
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Tips & Warnings
Although large plant and tree roots can clog or break the septic pipes and potentially damage your septic tank, shallow-rooted plants and grass cover are actually good for your septic field.
For a permanent solution to keep tree roots away from the septic tank, chop down the closest trees to the tank with a chainsaw and dig out the roots with a shovel.
Never plant a tree with deep, wide-spreading root systems, such as weeping willow trees, anywhere close to your septic tank.
Don't pour a root-killer containing copper sulfate or other dangerous chemicals into your septic system if your water supply is from a well. Remember that any chemicals you put into your septic tank can end up in your groundwater.
