Very common on gardenias in this area too Craig. We use a fungicide, forget the name, and spray it about three times a year and it seems to work. We also have to give ours some chelated iron each year or the foliage yellows. YMMV. George Craig Watts wrote: > > Well spring brings good news and bad news. Found our Gardenia COVERED in > black mold. It was planted in full sun as a cover plant to the well pump > cover. (I think they recommended partial shade.) > > We read "the book" and it suggested insectisidale soap. The only thing we > had was a very weak dish washing liquid solution. Cleaned of the plant and > power washed it with the hose. Looks much better and hope we have helped > more than hurt. > > The plant is about 3 years old and is very vigorous. Leave were very > strong. > > Any suggestions to what we have found? > > Craig Watts > kingdomm@worldnet.att.net