White mold or moss - Knowledgebase Question

Sparks, Ne
Question by kelbellnv
March 15, 2009
I have a white mold or moss growing around the base of 2 trees in the yard. Ones and apple tree and i'm not sure what the other is. What causes and what can get rid of it.

Answer from NGA
March 15, 2009


Trees sometimes are host to moss and lichen due to overly moist conditions but the lichen has a greenish tint rather than being white. If there is lichen, you can use a bordeaux spray (lime sulfur) to kill it and it will eventually weather away. If it is a white colored growth, it, too, is a fungal growth and bordeaux will kill it, but not control the underlying cause. Be sure to do a little detective work to find the cause. The drainage may not be as good as it should be and than can cause root rot over the years.

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