Fungal Attack On Lawn – Black Patches

Question
We live on top of a hill, 800ft elevation. Black patches are appearing on my lawn which appears to look like oil, but on close examination is some kind of fungal growth. They appeared about a month ago, and are getting bigger.
Answer
With regards to your question about the Black patches appearing on my lawn, they are a type of fungi. This year several people have reported the same problem to us. The best cure is to use a dressing of lawn sand available from most garden centres. Also, a general spiking and lawn scarification will help to stop the spread of this fungi. For more information click here.

If your lawn is being attacked by fungus, here is a list of a few things you can do to address the issue:

  1. Identify the type of fungus: Different types of fungi require different treatments, so it’s important to identify the specific fungus that is affecting your lawn.

  2. Improve drainage: Fungi thrive in moist environments, so improving drainage can help reduce their growth. Aerate the lawn, and ensure that water is not pooling on the surface.

  3. Adjust watering and mowing: Overwatering and mowing too short can create favourable conditions for fungi. Adjust your watering and mowing practices to ensure your lawn is not overly damp or stressed.

  4. Apply fungicides: There are several fungicides available that can help control fungal growth. Consult with a professional or a garden centre to determine the best option for your situation.

  5. Remove affected areas: In severe cases, it may be necessary to remove affected areas of the lawn and replace them with fresh grass seed or sod.