Ixora plants with black on leaves

Asked December 5, 2013, 5:01 PM EST

We have several maui ixoras in our yard. Several of them have many leaves with a black dusty powder on them; almost looks like mud/dirt.I have attached a picture I took with my phone that may help. Can you offer any suggestions on what we should treat the plants with or should we bring in a sample? Thank you

Pinellas County Florida

1 Response

If it rubs off easily, it is called Sooty mold, which is actually a result of insect feeding. Here's my article on soap sprays that can take care of it: http://okeechobee.ifas.ufl.edu/News%20columns/Soap.Sprays.htm.If the stuff is actually damage to the leaf tissue, you would be best to take leaves to your Pinellas county Extension office for positive identification, and they would be able to supply you with management suggestions. Here is their contact information: http://pinellas.ifas.ufl.edu/home_landscape/index.shtml