Posted by Maren Purves on September 18, 2002 at 12:11:55:
In Reply to: Gardenia Bush - sickly looking posted by Kris on September 15, 2002 at 15:42:48:
: The leaves on my gardenia bush are turning black. I don't know what is causing this or how to fix it. It's been doing great since we planted it three years ago, but lately it's been getting a lot of black on it's leaves.
This is called sooty mold and caused by insects. you can wash it off with a mild detergent (I use Ivory), diluted about 20:1 with water, which will also take