Questions

Over ten years, Gerry Daly answered more than 5,000 gardening questions. His knowledge is based in science and practical experience, and by working on radio and television. Access to the advice database is open

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I planted a healthy Viburnum Rhytidophyllum 1 month ago and leaves are turning yellow. No frost since planting, acid clay soil. I put plenty of my own compost and appropriate quantity of Blood, Fish & Bone in planting hole and watered well. Mulched with my own compost and watered when needed. Any advice would be greatly welcomed.
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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.
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Something is devouring my Pieris, see photo. Is it the dreaded vine wievel, and if so, how can I get rid of them?
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I want to plant a Virginia Creeper and am interested in Panthenocissus quinquefolia 'Yellow Wall' PBR. I seem to remember someone saying that it is a less hardy variety. Is this true? My house is on the north Donegal coast and I'd like to plant against an open east facing wall. How does it compare to other varieties of Virginia Creeper?
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My potted tulips have finished flowering. Will they come again next year? If so, what do I do with the bulbs now?

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I'm making leaf mould with sycamore leaves that have tar spot in plastic bags (with a few holes in the sides). Is it likely that the temperature will be high enough to kill the spores? If not, can I still use the leaf mould for young trees and shrubs?

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