How to Remove Moss From Cultured Stone

Although visually similar to all-natural stone, cultured stone is a manufactured material containing a blend of synthetic resins and natural stone fillers for beauty, strength and stain resistance. Like natural stone, cultured stone surfaces in densely vegetated environments are susceptible to moss, which abounds in moist climates. Moss quickly spreads over cultured stone, marring the nonporous surface with cushion-like overgrowth. Besides its scurvy appearance, which aesthetically detracts from cultured stone, moss makes cultured stone walking surfaces slippery. Remove moss from cultured stone to restore the surface’s beauty and prevent safety hazards.

Broom or scrub brush
4 oz. all-natural moss-removal detergent
1 gallon water
Bucket
Stirring utensil
Pump sprayer
Garden hose

Instructions

- 1
  Sweep or scrub loose moss off the cultured stone using a broom or scrub brush. Brooms are most efficient on cultured stone patios or walkways, while scrub brushes work best on cultured stone walls and structures.
- 2
  Pour all-natural moss-removal detergent and water into a bucket. Mix the detergent solution with a stirring utensil, then pour the solution into a pump sprayer.
- 3
  Spray the cultured stone surface with the detergent solution, thoroughly saturating the remaining moss. Let the solution set on the cultured stone until the moss dies, which typically takes 24 hours.
- 4
  Sweep or scrub the dead moss -- which now should be coarser and paler -- off the cultured stone surface using either the broom or scrub brush.
- 5
  Spray the cultured stone with water. Flush off any lingering moss fragments.

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