Question
Your recommendation was to use a Copper Fungicide. Would
copper sulphur be good to use.  My understanding is its used to clear ponds with green algae growth. Or do you have a specific product to use  

Answer
Mike,

I found this on the North Carolina Extension website- it should answer your question:

Several fungicides may also be help in the management of leaf spot in the landscape.


Fungicides Recommended for Entomosporium Leaf Spot Control

Fungicide       Rate per gallon  Rate per 100 gallons
Banner              1 tsp.          12-20 fl. oz.
Daconil 2787 75W*  1 1/2 tbs.      1 1/2 lb.
Daconil 2787 4.1F  2/3 tbs.         2 pt.
Chlorothalonil*   see label        see label
Fore 80W           3/4 tbs.        1 1/2 lb.
Bayeleton 25W**   2 tsp.         1/2 - 1.0 lb.
Funginex EC*     see label        see label

*Available in small packages.
**Repeated applications may cause some injury.

This disease is very difficult to control after plants are severely infected. During extended cool, wet periods, protective sprays may be necessary. Where leaf spot is a problem, applications of one of the above fungicides should begin as new growth starts in the spring with additional sprays at 10 - 14 day intervals until mid-June. Make applications at 10 day intervals during cool, wet periods and at 14 day intervals during drier periods. Fungicide applications should not be necessary during hot, dry periods. It may also be helpful to make 3-4 applications from mid-October to late November if wet weather prevails.

Good luck.
Ed Gulliksen