Tropical Style

Can Power Wash Chemicals Kill Plants?

Power-washing your house is not limited to stripping the paint from timber to get a new paint job. Actually, pressure washing is a practical approach to remove years of dirt, mildew and algae from your siding for a brand new appearance. The plants that surround your house’s base, however, are straight underneath the power-washing program website. Although power-wash substances are manufactured to be safe for both animal and plant life, it is feasible for them to destroy plants.

Bleach Solutions

Power washing typically utilizes a bleach solution to eliminate microorganisms, such as moulds and mildew. Commonly diluted to your 3:1 water-to-bleach ratio, this runoff into your garden eventually transforms into salts as the bleach breaks down. High salinity from the garden contributes to plant death since water absorption gets hard for the fighting plants. 1 approach to avoid bleach damage is watering the crops prior to power washing. As the runoff moves across the leaf, the bleach gets even more diluted and doesn’t influence the plants as much. A good garden watering after the power washing permits you to rinse any remaining bleach residues away to preserve the plant and soil atmosphere.


If your house is only power-washed with detergents, these absorbent substances are usually diluted to your 10:1 water-to-detergent ratio. Although watered down, detergents bring about brown spotting on certain plants if allowed to remain on leaf. Employing the watering technique for bleach solutions, your crops can still remain healthy, but you ought to be thorough with your rinsing to get the very best consequences — even a small amount of detergent left in the lawn contributes to plant death.


Removing plants from the immediate place is the best way to preserve your lawn, but not all plants are potted and easily transported. Alternatively, cover your outside garden using plastic to prevent chemical overspray and runoff. But do not cover all your plants at once. Power washing takes time to finish, especially if the house is large. For instance, cover plants on the north side of your house and find them once the power washing goes into the east of the house. Covering the plants all day deprives them of air exchange and contributes to heat stress.

Sealant Consideration

If you have natural wood siding, it typically needs a sealant after the power washing to preserve the natural grain. Sealants are more damaging to plants than power-wash chemicals since they aren’t diluted. You have to cover your crops and protected them from any contact with the sealant. Generally, you cannot wash sealants off of plants and leaf ultimately perish.

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