clay soil - Knowledgebase Question

thornburg, va
Question by vlbrsr
September 1, 2007
We have a very hard clay (white to tan in color) in most of our yard, where there are bare spots we get a mold of some kind that is dark green in color. How do we get rid of this?

Answer from NGA
September 1, 2007


What you're seeing is an algae bloom. It grows because clay soils hold lots of moisture. As this moisture rises to the surface and evaporates, the sunshine prompts an algae bloom. You can either turn the soil periodically to dry it out, or you can cover it with an organic mulch material to keep sunlight from reaching the soil surface.

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