We Value Your Privacy

We and our partners use technology such as cookies on our site to personalise content and ads, provide social media features, and analyse our traffic. Click below to consent to the use of this technology across the web. You can change your mind and change your consent choices at anytime by returning to this site.

Update Consent
Loading ...

How to get moss off a concrete patio

Updated February 21, 2017

Moss grows in clumps or mats in moist, shady habitats. Mosses reproduce by throwing off spores. Some people buy moss for their concrete or stone patios in order to give them an aged look. Others cannot abide moss and do everything possible to get rid of it. Both points of view are understandable. Moss does give an air of ancient respectability. And it does create a significant safety hazard because it is slippery. If you want to eliminate moss from your concrete or stone patio, try these solutions.

Loading ...
  1. Mix 4.5 litres of white vinegar in a bucket with 1 tbsp of washing-up liquid. Use an old mop, a long-handled brush or a large sponge to wipe down the patio with the solution. The moss should be gone in a couple of days, though a second application may be necessary. Repeat the process if the moss comes back.

  2. Splash boiling water over the patio. Be careful not to splash the water from the pot on yourself. The hot water will kill the moss. Like vinegar and dishwashing liquid, boiling water will also call kill other plants it touches, so don't splash too far.

  3. Scrub the moss away with a long-handled stiff brush. Since moss does not have roots, it will come away quite easily. For a little more efficacy, add 1 part chlorine bleach to 5 parts water and scrub the solution on the patio as you are scrubbing away the moss. You can also add a little washing powder to the water-bleach combination.

  4. Remove the moss with a pressure washer or power sprayer if it covers an area too large to comfortably treat by hand. Practice somewhere where nothing is growing first. A mishandled pressure washer can tear your garden and decorative pavers apart.

  5. Apply a commercial herbicide. There are dozens on the market and most of them will get rid of moss. Apply according to the manufacturer's directions if none of the less environmentally harmful strategies work. Test the commercial herbicide on a small area of your patio before you apply it everywhere. Some herbicides will discolour concrete. Most likely, you will not need to use the commercial products in any case.

Loading ...

Things You'll Need

  • Bucket
  • Vinegar
  • Washing-up liquid
  • Bucket
  • Old mop
  • Long-handled stiff brush
  • Large sponge
  • Pot
  • Chlorine bleach
  • Washing powder
  • Pressure washer
  • Commercial herbicide

About the Author

Tanya Lee is a professional writer with more than 30 years experience. She has published extensively in the field of education and as a journalist, the latter in such publications as "High Country News" and "News from Indian Country." Lee holds a M.Ed. from the Harvard Graduate School of Education.

Loading ...