Moss & Thatch Control

Moss and thatch are caused by a variety of circumstances:

  • Poor drainage and aeration (compacted earth)
  • Long periods of wet and moist weather, resulting in waterlogging
  • Shade
  • Sparse grass cover, often as a result of frequent close mowing
  • Grass being too long, often as a result of infrequent mowing (over 2 weeks in between cuts, which shocks the grass)
  • Acidic or clay based soil
  • Insufficient feed.

Thatch is the built-up, matted layer of dead and living matter on your lawn’s surface (leaves, cut grass etc). Too much thatch can suffocate, rather than protect your lawn. When built up it acts as a barrier between the grass plant leaf and soil surface, therefore not allowing grass roots to thrive. On hot days, any water applied to your garden is just likely to run off it like a dry sponge and during long periods of wet weather, the moisture will slowly be absorbed but will then stay heavy and sodden like a wet sponge. Neither of which are healthy or productive for your lawn.

Thatch Layer & A Handful of Thatch

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Removal and treatment may not solve the problem completely in one go, and so must be tackled in conjunction with any other ongoing problems. If your grass is not growing well for any or all of the reasons above, this will allow moss and thatch to take hold and become a real and very unsightly problem.

We apply moss killer (iron based) during our winter treatment and can also do so during the spring treatment if requested. If you choose to have your lawn scarified or aerated, moss killer and fertiliser will applied approximately 7-21 days before. This can often blacken or brown up your lawn (as it works on dehydrating and breaking down the moss / thatch) and is nothing to be alarmed about, it shows the treatment is working!).

Mossy Lawn & Iron Treatment Blackening Up Lawn

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Manual raking will not get of your lawn of dead thatch and moss once it is established, but even so is worth doing fairly regularly in order to get rid of more debris that will increase thatch.

Because scarifying and aerating are stressful for your lawn, they need to be done when your grass is actively growing such as in autumn (or spring, although bear in mind that at this time of year, if your garden has weeds, these will be chopped up and we may not be able to pick up every last piece and so they may spread), otherwise your lawn could take longer to recover. The ground should be moist (so if need be we recommend watering your lawn a few days before), but not waterlogged. It is useful, though not essential, to cut your grass a day or two before scarifying to help remove excess grass and cut through larger patches of thatch, making it easier to remove.



For more information or to book an appointment Contact Us or call 01752 710331.