I live in the Cleveland, Ohio area and have about four Holly Bushes on the North side of my home. They are partially covered by the overhang of our roof but get better than 5 hours of sun per day. They are losing leaves and look kind of weak right now. Does anyone know what I can do to help them out. Pruning or fertilizer help would be appreciated. What kind of fertilizer should I use to invigorate them? They get plenty of water since I have flowers around them and the area is mulch covered.
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