The growth of organic things is usually something that people find to be a positive development in the world, but suffice it to say that this wouldn’t apply to each and every thing under the sun. For example, chances are that you would not appreciate mold growing inside of your household since this can trigger allergic reactions and make your residence seem desolate and unwelcoming to say the least. Pressure washing can remove the visible surface layer of mold, but it might not tackle any mold particles that are beyond the exterior which makes it likely that this mold would come back once all has been said and is now out of the way.
That’s why it’s important to use substances like bleach during houston power washing, since these kinds of chemicals can make it harder for mold to grow back than might have been the case otherwise. The reason behind this is that bleach is something that kills most kinds of microscopic organisms, but you should bear in mind that it might kill your plants if the runoff ends up contaminating the water they derive their nutrients from.
You can keep your plants safe by diluting the bleach to a sufficiently low level, though. Making bleach ten percent of your cleaning solution will usually turn it into a safe thing to spray around plants. Even if some of it gets into the water, the natural systems of the earth will filter it out eventually. That won’t happen if you use pure bleach or a solution that has not been sufficiently watered down because natural processes don’t work fast enough to break apart concentrated artificial chemicals like bleach.