Moss should be controlled in the early spring and once the lawn has received it’s first mowing with the view of eradicating what we refer to as winter moss.
Moss can be controlled just ahead of a lawn renovation programme when the lawn is completely over-sown with grass seed. If your lawn has more moss than grass in it, plan to renovate it.
Moss is an indicator to tell you that there is a problem with your grass denisty and vigour. You should not have moss in your lawn. Mosses are plants, comparatively simple in structure and function and, with the Liverworts, comprise the Bryophyta family – one of the least complicated groups of the plant kingdom. Controlling moss invasion with Sulphate of Iron will result in stronger grass growth and the moss then tends to disappear naturally because of the increased competition presented by healthy grasses.

Squashed worm casts make an ideal growing medium for moss and weed spores/seeds. The casts will add a lot of sticky soil to the lawn’s surface making it bumpy and uneven and quickly smother the turf grasses.
The CastClear treatment product prevents the worms casting for a 20 days and reduces the muddy surface. Repeat every 20 days at 1/3rd of the initial dose rate to keep the active bank account in the soil topped up to train the worms to stay deeper in the soil profile and not in the immediate root zone. The Earthworms are not harmed by the CastClear active, simply encouraged to go about their business a little deeper down the soil. Dry worm soil casts can be brushed up and used as compost or top dressing ahead of mowing. The worms will be active during the months of August to April when the soil water table naturally rises. Thew worms will eat fallen leaves and debris, including lawn thatch.