Question: Black sooty mold grows on my citrus and gardenia. Is this a problem?
Black sooty mold is a red flag indicating insects that feed and excrete on the leaves of your plants. It sometimes has a varnished appearance to the leaves, followed by the black mold that grows on the honeydew made by the excretion of the insects. Try spraying with a soapy water solution (1 tsp. mild detergent to a gallon of water) or use Neem oil according to label instructions.
