White Powdery "Mildew" on Cassia trees
I live in Fort Lauderdale, Florida. My Cassia trees have a white powdery substance. It looks like mildew. The leaves stick together and when pulled apart, it looks like a web. I have tried Bayer products and natural sprays but nothing helps. It comes and goes (somewhat). It doesn't disappear completely.
Submitted by BHGPhotoContest

Hi,

Thanks for writing. Without being able to see your cassia in person, I can't say for sure what the problem is. (Unfortunately, this free service really isn't designed for diagnosing plant problems because so often you need to see the plants in person to give a reliable answer.) There may even be more than one issue going on.

For more help, I'd contact your Broward County Cooperative Extension Service at: http://www.broward.org/extension/  The staff should be able to help more if you can bring in samples of the leaves for them to examine in person.

---Justin, Senior Garden Editor, BHG.com

Answered by BHGgardenEditors