I planted a Yellow Wall Virginia Creeper early this year, has been feed, mulched, watered as needed. It was very health in early spring with lots of new growth, but for past 2 months it slowly detoriated. Leaves looked like something was eating them so I sprayed with insecticide (caterpillars, whitefly, blackfly & other mites), although I could never see any insects. Also not slugs as pellets remain uneaten. Leaves are dry and paper-like, Any new growth curls up and turns brown.