Question
The leaves have black spots on them. Remedy.

Answer
Hi cookie..Leaf spots, Alternaria, Cercospora, Colletotrichum, Phyllosticta or Septoria spp.
Leaf spots are very common, typically sharply delimited necrotic areas on plant leaves caused by a wide variety of pathogenic species. Leaf spots usually are favored by wet conditions and may become important if a large number of lesions are present or if they start to coalesce.

Under those conditions, control may also be achieved with the use of fungicides applied as soon as symptoms are visible.

Another thing you can try is not watering the plant itself getting the leaves wet, use a drip system instead of sprinklers or water by hand...