Q.My Indian hawthorns are severely infected with Entomosporium leaf spot. It’s early summer, how do I treat them?
It took me awhile to figure out what kind of shrub had in my yard, and little while longer to figure out what was afflicting the plant. I have three Indian Hawthorne shrubs next to each other, all three are severely defoliating, I haven’t seen any buds or flowers in the past two years, and most leaves are infected with Entomosporium leaf spot. It’s early summer, should I treat with fungicide, prune, or lose all hope for recovery? If I do prune, do i remove all leaves and bare branches?

Certified GKH Gardening Expert
This can be fatal most of the time. You can try to correct this by applying wettable sulfur and dolomitic lime as soon as possible, but it is likely that this is too far gone.
If they die off, you may consider replacing it with something completely unrelated, as to not spread infection to anything new that you do plant.
This article will help: https://www.gardeningknowhow.com/ornamental/trees/hawthorn/growing-hawthorn-trees.htm