Oleander
Q.

Oleander Mildew/ Mold??

rdgrjr added on June 12, 2011 | Answered

We have several oleander plants, which create a wall towards the rear of our property. We have noticed "spores" of a sort, also the leaves seem to have a sort of oil on them, so together the plants look out of sorts. Is there a natural way to cean up this problem? We have had these plants for more than ten years now and they are a wonderful addition to our home. We reside in southern AZ. Thank you in advance for your help.

A.
A.Answers to this queston: Add Answer
Heather
Certified GKH Gardening Expert
Answered on June 17, 2011

It sounds like you may have both pests (that oily sheen could be honeydew from them) and a fungus. I personally like to use neem oil because it is organic and also kills both pests and fungus in one go, so you don't have to use as many products. Here is more information on it:
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm

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