The vast majority of lawns have moss in them, even the best kept ones. It may be just a minute amount or your lawn may be blanketed by it. Either way without some sort of treatment then it will just spread. Although your lawn may look green from a distance the moss will soon suffocate the grass and you will be left with a spongy mess of a lawn which will be difficult to mow.
Killing and removing the moss is just the start. To remain moss-free, the vigour of the grass must be improved and any other contributory factors taken care of Good lawn maintenance is essential to maintaining a healthy lawn.
Moss can be caused by a number of factors:
Moss spreads by means of spores and there are millions of them. You can control moss by either treating with a liquid or powdered iron, liquid is easier to apply and less messy. The moss will then need to be scarified out with a professional scarifier 10 – 14 days later. If the moss is really thick then we recommend a second moss treatment after scarification to make sure all the moss has been killed. It is more than likely that over seeding may be required where there are sparse patches left by moss removal.
The dead moss can be added to the compost heap but do be aware that it is very slow to rot and will require plenty of of other compostable waste.
To ensure that moss does not return a programmed annual lawn treatment should be put in to place to ensure that the lawn thickens and grows healthily and thus preventing the return of moss.
For more info on scarification click here