Power washing is an effective way to remove years of dirt, algae, and mildew from your house siding, but it raises a concern about the safety of plants in the vicinity. While power-wash chemicals are designed to be safe for animals and plants, there is still a possibility of harm to them.
Cleansers
For a house that is power-washed using detergents, the appropriate proportion of biodegradable chemicals is 10 parts water to one part cleanser. However, detergents can cause brown spotting on some plants if they are allowed to remain on the foliage. The use of bleach solutions to water plants after power washing can help to keep them safe, but it is essential to flush thoroughly to avoid leaving behind any detergent that can contribute to the death of plants.
Bleach Solutions
Most power washing processes entail the use of a detergent solution to remove microorganisms such as molds and algae. This solution is typically diluted to a 3:1 water-to-bleach proportion. However, when it overflows into the garden, it breaks down into salts that increase the salinity of the soil and hamper water absorption by plants. Pre-watering plants before power washing can lessen the impact of bleach on plants.
Sealant Consideration
For wood siding, a sealant is required after power washing to preserve its natural look. Undiluted wood sealants can be more harmful to plants than power wash chemicals. It is essential to cover plants and ensure that they are not exposed to the sealant. Failure to do so can lead to the death of plants as the sealant cannot be washed off the foliage.
How to Keep Your Plants Safe?
It is necessary to take precautions to protect your plants during a power washing session. Pre-watering your plants before the session can reduce the impact of chemical solutions on them. Additionally, using tarps as protective covering can also be useful. However, it is crucial to ensure that the tarps are free of any chemicals or debris that can harm the plants. Finally, it is essential to take precautions when disposing of any wash that comes from the downspout, especially if it contains toxic chemicals.
By taking the necessary precautions, you can ensure that your plants stay safe during power washing sessions.