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Can polyethylene landscape planter boxes be safely pressure-washed without surface degradation?
Polyethylene landscape planter boxes are popular for their durability and lightweight design, but many gardeners wonder if they can withstand pressure washing without surface damage. The good news is that high-density polyethylene (HDPE) planters are generally resistant to pressure washing when done correctly. Use a pressure washer with a wide nozzle (40° or wider) and keep the pressure below 1,500 PSI to avoid scratches or surface erosion. Avoid holding the nozzle too close (maintain at least 12 inches distance) and use cold water to prevent warping. For stubborn stains, mild soap can be added. Regular gentle cleaning helps maintain the planter's appearance without compromising its structural integrity. Always check manufacturer guidelines, as some textured or coated polyethylene planters may have specific care requirements. With proper technique, pressure washing can effectively clean polyethylene planters without causing degradation.
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