Apothecary Rose, Black Spots on Leaves II
Answered by: Inge Poot
Question from: Deborah Lee
Posted on: August 09, 2006

Thank you for the information on how to treat black spot of roses organically in our previous question and answer exchange.

I have taken your suggestion, however the leaves are still getting brown spots. On closer inspection, I see that there is tiny webbing all over the leaves, perhaps a spider or some other insect? Do I still continue to spray with tea tree and soap, or is there another natural solution?

This sounds like a bad spider mite infestation. Spray hard with cold water and then use a neem oil spray at the rate of one teaspoon of neem with half a teaspoon of Safer’s concentrated insecticidal soap or if this is not available, with half a teaspoon of dishwash detergent in one litre (Quart) of water. Repeat every three days for at least three times. Try to use Safer’s soap rather than dishwash detergent for much better results.

Back to Growing Herbs | Q & A Index

Copyright © 1997-2022 Otto Richter and Sons Limited. All rights reserved.