Rosebud
Oxford
Posts: 35
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| Posted: Fri Sep 18, 2009 4:37 pm Post subject: Black substance on crape myrtles, how to get rid of? |
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I have crape myrtles and they all have black substances all over them. Some say it's mold.It is also on some of my other plants.How do i get rid of it? I an afraid it might kill them. I really need help.
moderator's note: added a more descriptive title to topic
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eileen
 Forum Moderator
Scotland
Posts: 18013
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| Posted: Fri Sep 18, 2009 5:32 pm Post subject: |
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Rosebud black sooty mold on plants is actually a sign of problems above and beyond just fungus. This black mold is formed when insects leave their waste product (called honeydew) on plants. The mold then forms on this substance. Insects that cause this problem include aphids and mealy bugs so treating sooty mold is not a matter of just removing the mold itself. For a long-term solution to this problem you must get rid of the insects that are at the root of your mold problem.
You can dilute an insecticidal soap and then pour this solution into a clean garden sprayer. How much soap you will need depends on how many plants you have to treat. Go by the instructions of the soap manufacturer and you should be able to deal with the bugs that are causing this sooty mold problem you have.
Good luck!! 
Oh - almost forgot. Wear gloves when spraying as you don't want any to get on your skin.
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Rosebud
Oxford
Posts: 35
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| Posted: Fri Sep 18, 2009 8:29 pm Post subject: |
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Eileen, I thank you for this information, I have lots of plants being affected by this problem.I'll spray as soon as it stops raining.Thanks again so much.
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