What could be killing off my patch of English Ivy? I have/had a patch of very health ivy for over 15 years in this place. Suddenly, the center part has been quickly dying off. The leaves are dry and curling up. The perimeter of the patch is still healthy and a patch of ivy across a set of steps is health otherwise. This patch receives adequate sunlight and water.
As a broadside attack, I sprayed heavily with Triacide for insects twice and with Captan fungicide once. Neither seemed to affect the dying off. Any suggestions?
