We have a raised aggregate driveway that seems to be getting more and more moss on it as the years go by. How can I maintain this without damaging the aggregate?
A spray of zinc sulfate, zinc chloride, or zinc-copper sulfate mix, should do the trick. These products are normally available through major building centers. They are often used to prevent moss growth on roofs, but they will do just fine on a driveway. Alternatively, bleach will normally do the job. Regardless of what you use, bear in mind that overspray can damage surrounding plant life.
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