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Lawn Tonic

A Lawn Tonic treatment is a TopGrass specialty aimed at completing two primary functions:

A quick Green-Up:

It can be applied to provide a quick and effective green-up to the lawn to almost immediately improve the look and colour of the lawn. This can be done in preparation for such things as garden parties, weddings, events, open gardens etc.

To help the lawn recover from Red Thread fungal disease:

It can also be applied to aid the lawn in a quick recovery following a bout of Red Thread fungal disease.

What is Red Thread? This is a fungal disease that typically occurs in damp and humid conditions. This disease can be identified in the lawn from the pink thread-like substance that grows on the grass blade (see image below). This is one of the most common lawn diseases. While a lawn will usually recover on its own from a bout of Red Thread, we can help speed along the process.

How does a Lawn Tonic help? A Lawn Tonic will not cure the lawn of Red Thread but will help speed up the recovery and help return your lawn to its previous green, luscious appearance. The tonic tends to take effect within 3 days, sometimes even quicker, so it is a fast visual solution to an unsightly problem. Unfortunately, once a lawn gets Red Thread, the disease tends to remain and can come out in bouts every now and then but rest assured we can apply this tonic each time to help speed up the recovery every time.

Other options to help combat Red Thread: 

  • We also recommend regular aerations to help decompact the lawn which should reduce the number of outbreaks your lawn has of the disease. This decompaction allows water, air, and nutrients to flow through the soil effectively, rather than sitting on top. If water remains on the surface, this would increase the chances of incurring another bout of Red Thread.
  • Regular scarification of the lawn is also advised. This is to improve airflow and to remove sources of reinfection from the lawn. Any infected clippings should be disposed of and not composted.

How does our Lawn Tonic Treatment work?

This is a fast-acting, all in one, foliar liquid spray applied in a similar way to our weed killer and is absorbed through the grass leaf. The professional equipment we use to apply the treatment allows for an even spread of the product across the lawn, to ensure a level green-up or all the Red Thread areas to be treated. This treatment greens up and strengthens the grass against disease. A visible green-up can be seen from as little as 3 hours post-application.

The Lawn Tonic Formulation comprises of:

  • Diluted liquid Iron Fe to provide a quick green-up
  • Micro-nutrients to harden against disease and promote strong, healthy growth in order to help recovery from current Red Thread bouts


When? A Lawn Tonic can be applied at any time of the year, as long as the lawn is not dry.

What? A liquid application of Iron Fe and Micro-nutrients

Why? To provide a quick green-up for garden parties/events or to aid the lawn in a quick recovery following a bout of Red Thread fungal disease.

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If you are an existing customer:

Click here to order a Lawn Tonic online