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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 would appreciate advice on how to deal with this problem. I had two 9ft Holly Alaska's planted last November. I had to tie the stakes to the fence over the winter to support as the strong winds were uprooting them. They have lost all their leaves from the top half - for about 4ft. I now notice that both growing tips have started to die back and have turned brown from growing tip down 12/14 inches. Should I prune off the dieback?

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I am aware that the recent snow has caused severe problems for cordylines. Just wanted to know how I should treat my 7 year old cordyline. It is in a very open space and is the centre piece in my front garden. It is now about 4 feet tall - has split into three sections. The recent snow and ongoing cold has started to rot the tree. I am very concerned as it has started to rot from the growing tips and the new growth is starting to fall.. Will it regrow or is it dying? Please advise

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Last year half the bark below the graft had a whitish substance on it. I just rubbed it off. This year there is no bark where this substance was and the tree has no leaves not even buds. The rootstock it was grafted onto has bark for about 10 inches above the ground where no whitish substance was and has green shoots which I have removed. Is there anything I can do or is it dead?Tree was planted about 4 years ago. Summer very wet - is that the cause. Also in the same area my Golden Bamboo has turnd brown and has not greened up. Is this also dead:

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