rid of moss on pavers
Asked September 16, 2016, 6:11 PM EDT
We have a walk way of pavers and paved "walls" going down an embankment. Once we have power washed the moss away, what do you suggest to spray to eliminate it's return?
Otter Tail County Minnesota
Thank you for the question. Limiting moss requires a combination of techniques and a bit of persistence. You’ll need to decrease both shade and moisture in the area. If possible, trimming overhanging branches is an effective way to decrease shade and allow the area to dry out. If shade is from adjacent buildings or structures, you’’ll need to repeat the process quite often. Pressure washers can be particularly effective, but use caution as excess pressure can damage pavers. A stiff brush works, too, but requires considerably more effort – elbow grease.
Moss control products are available in either liquid and granular formulations. (Liquids provide the best coverage.) To avoid unwanted stains on the sidewalk, select a kind labeled for use on hardscapes. If you decide to use a chemical, read the label and follow directions exactly.
Read more about moss and control from our colleagues in the Pacific Northwest:
See “Methods of control” at http://bryophytes.science.oregonstate.edu/page18.htm and “Problems with Moss” at http://blogs.nwic.edu/bryoblog/files/2011/03/moss.pdf
Thank you for contacting Extension.