Our moss killer is formulated to kill moss on your lawn, while making the grass greener in colour.
When & Where to use moss killer
For best results, you should use this product to remove moss and improve the colour of the grass blades before you rake or scarify the lawn
Apply during Spring, Summer or Autumn when the weather is not too hot and not too cold. Don’t apply if frost is forecast.
It’s perfectly fine to apply moss killer at any time of year but you want to make sure the grass is growing well when you scarify.
The best time to apply this product early in the growing season – March or April – as part of a year round lawn care programme.
When to expect seeing results from ferrous sulphate moss killer
The fast acting formula will blacken moss within 2 days. After which, you should rake or scarify the dead moss from the lawn.
The grass will turn greener over the following 2 weeks
How to apply moss killer
The simplest method is by mixing the granules with water and sprinkling the mixture over a marked out area on the lawn. There are 2 popular methods of applying iron sulphate to lawns. One is with a watering can and the other with a knapsack sprayer.
When you receive your moss killer, you will also receive full instructions on how to correctly apply the mixture for best results
How much moss killer to use
How much iron sulphate to use with a watering can
For moss control hen using a watering can, you will need 4 grams per litre of water and 1 litre of water will cover 1 m2.
For example, if you have a 10 litre watering can, that’s 40g mixed with 10 litres of water, sprinkled over 10m2.
How much iron sulphate to use with a knapsack sprayer
For moss control when using a knapsack sprayer, you will need to mix 4 grams of iron sulphate with 200ml of water to cover 1m2.
For example if you have a 16 litre knapsack sprayer, that’s 320g mixed with 16 litres of water to cover 80m2.
Knapsack sprayers have finer nozzles so they can apply the right amount of product without needing as much water
For more information, read our full article on ‘how to get rid of and prevent moss in your lawn‘
Is Iron Sulphate safe for pets and children
As this is a non-toxic product, it is safe to use where pets and children play. However, iron sulphate is known to stain surfaces. So, it’s recommended to keep pets off treated areas until it has been properly absorbed by the lawn – usually a couple of days or after a heavy downpour. That way it removes any possibility of their fur being stained by the product.
To find out more about which products you should take precautions with, read my article ‘Is lawn feed & fertiliser safe for pets and kids‘