I have an evergreen bush (which I was told is a strawberry bush). It produces small, pink droplet flowers but no berries. It now has a lot of yellow leaves (similar to black spot on roses) and a shiny residue on leaves also. I have removed all the yellow leaves and the branches they have are on. I thought of spraying it with black spot spray. Can you advise how to treat this?
Evergreen Strawberry Bush
Certified GKH Gardening Expert
If the leaves are shiny, this is likely honeydew from sap sucking insects such as aphids or scale. Neem oil is an effective treatment. Here is more information: https://www.gardeningknowhow.com/plant-problems/pests/scale-bug-how-to-control-plant-scale.htm