By Fattwig
United Kingdom 
My escallonia's leaves have black spots on them. We inherited the plant when we bought the property in May. There were a lot of dead leaves on the ground under it, could this have contributed to the problem?
15 Aug, 2015
Escallonia leaf spot by the sound of it, a fungal infection these plants are prone to. Link below gives more information
https://www.rhs.org.uk/advice/profile?pid=108
15 Aug, 2015