Moss  The main reason why lawns suffer from moss is that they have surface compaction and this encourages moss to thrive on the layer of moisture on the surface that is unable to drain away.  It is also present when the grass growth is weak.

Moss can be controlled by cultural and or chemical means.  Cultural controls such as aeration, improved drainage, good soil fertility, top dressing, scarifying i.e. removal of thatch and not mowing too short.

There are several moss killers available, both in liquid form or as a lawn sand dressing.

DO NOT attempt to scarify the moss out of the lawn while it is still alive.  This will only spread the spores and increase the infestation.  Apply the liquid or granular chemical according to the manufacturer’s recommendations.  When the moss has turned either black or brown, depending on the chemical used, then and only then thoroughly scarify the lawn and dispose of the rubbish.  Do not put on to the compost heap.