Q.My Hornbeams Have Very Thin Growth And Have Dead Branches At The Top. I Am Looking For Advice As To What I Might Feed Them To Enha
nce growth and how much I can prune the back with out damaging them I think one has Botryosphaeria Canker and would like to know you solution to treating that

Certified GKH Gardening Expert
Botryosphaeria canker needs to be pruned out for control, followed by proper tree care. You can remove dead wood at any time for all trees. Fertilize sparingly using an organic fertilizer in spring.
https://www.gardeningknowhow.com/plant-problems/disease/botryosphaeria-canker-disease.htm
https://www.gardeningknowhow.com/ornamental/trees/hornbeam/hornbeam-care-and-growing.htm