MOLDY LOOKING COLUMBINE - Knowledgebase Question

GRAIN VALLEY, Mi
Question by ksmogirl2
June 14, 2009
MY COLUMBINE APPEARS TO MOLD ON THE LEAVES. NOTHING ELSE AROUND THEM HAVE MOLD, JUST THE COLUMBINE. I DO NOT HAVE A CLUE WHAT TO DO FOR THEM. ANY IDEAS ? THANKS, KATHY


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Answer from NGA
June 14, 2009

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Columbine is prone to a fungal disease called powdery mildew. The spores spread through splashing water and travel on wind currents to infect other plants. Once established, powdery mildew is difficult to control. Most fungal diseases develop during rainy, wet weather, but powdery mildew develops when daytime temperatures are warm and nights are cool. The disease is not dependent on water on the leaves. You can help your columbines resist the disease by cutting back the affected plant parts (down to ground level if necessary), providing afternoon sunshine, and lots of air circulation in and around the plants. Best wishes with your columbine!

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