How do I stop tree roots from growing under driveway. The roots are showing above the ground.
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3po3 on Mar 27, 2011Install root barriers and keep trees happy and watered, so they won't be tempted to reach their roots into the lousy soil under the driveway. • Add plenty of mulch around the base of each tree, and water deeply and regularly during drought periods. • You can also install three types of root barriers between sidewalks and trees to divert the roots. The most common root barrier is simply a wall made of plastic or other impermeable material that blocks the roots and direct them downward. These barriers must be planted at least 18 inches deep to be effective, and they may cause problems by blocking the transfer of water and nutrients. • A second option is nylon or copper screens that allow water and nutrients to pass through, and trap roots in small holes where they cannot grow. The third option is landscape fabric treated with root-inhibiting herbicides, such as Bio-Barrier - http://www.biobarrier.com/Helpful Reply
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