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Moss Control
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Blackening! What is this?
Good question Gordon....
Blackening refers to the 'blackening' effect some products have on turf. These products generally contain iron or ferrous sulphate, which when used at high rates will blacken (and kill) moss and if used in excess or in dry conditions will also blacken the grass. There are two groups of products containing iron sulphate.
Your Moss Killer* (containing ferrous sulphate), packaged and sold as a pesticide to kill moss, will have an application rate designed to do just that. However, if you applied it at half rate it more than likely would only damage the moss but would act as a very good green-up for the grass. It would therefore be more like a fertiliser than a moss killer!!
On the other hand, soluble ferrous sulphate* or high iron fertilisers* (containing ferrous sulphate) are packaged and sold as fertilisers and will fertilise, green and harden the grass against disease. However, were you to double the application rate it would start to blacken and kill the moss in exactly the same way as the Moss Killer does.
Concentrates the mind doesn't it?
*Lawnsmith Products from this page:
Is there a natural and safe way to get rid of the moss?
I want to kill the moss, but I don't want to kill my dog...
Response will be very much appreciated!
Hi Lana
Presuming you want to get rid of the moss as well then the first thing is to rake it out. Won't affect the dog at all.
The second thing is to spray what is left with a solution of ferrous sulphate. This is a naturally occuring salt and the only possibly side effects are that the grass will be a little saltier and rich in iron (as is spinach) should the dog decide to eat it.
Hope that helps
