Black Grass Fungus

Written by annie carter
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Black grass fungus, or more commonly called black slime mould, thrives on damp places and is often found after a hard rain. This type of fungus is more of a superficial issue and will clear itself once dryer weather comes. However, in the meantime there are ways of getting rid of the problem yourself.

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Found in cultivated grasses, black grass mould shows up during periods of intense rain. Because of this, this type of mould is often seen during late spring through to early fall. It occurs in several different colours such as black, brown, off-white, dark-red and yellow. As the problem persists, the mould will turn into a white powdery substance that will spread via the wind.


Eliminating black slime mould is a simple process since the mould grows only on the surface of the grass. To remove the mould, you can mow over the area and then rake up and dispose the remains. If this doesn't work, sprinkle baking soda or cornmeal over the mould. This will kill any mould that is still left on your grass.


To prevent black grass fungus, water in the morning and let dry throughout the day. It is best to water less often during the rainy months for your area to help keep the fungus at bay. If the mould continues to appear regardless of how often you water, spray a vinegar solution over your grass as a fungus repellent.

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