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Help! Spotted Oregano Leaves

Oregano    None Given

My oregano has been doing well until I harvested it recently. Tiny black spots seem to be appearing on the leaves and I have pinched off those leaves. The spots kept reappearing but my oregano still seems to be growing fine. Is it some sort of fungus? What can I do to control it?


Posted by: Kelly (1 point) Kelly
Posted: September 15, 2016




Answers

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I suspect it could be sooty mold (fungal growth). Is there any insects (particularly aphids) on your plant?
The sooty mold generally appears as a black blemish or coating on plant surface. It won't cause any direct damage to plants but may block sunlight and reduce photosynthesis. Sooty mold mainly develops on honey dew (sugary substance) secreted by sap sucking insects like whiteflies, aphids, leaf hoppers, scale insects, mealybugs and psyllids.

Sooty mold can be easily removed by spraying strong jet of water or washing leaves with soap water. And sucking insects can be reduced by spraying neem oil.


Posted by: Dr. Ravishankar Narayana (11 points) Dr. Ravishankar Narayana
Posted: September 15, 2016




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