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Over the years, Gerry has answered more than 5,000 of your gardening questions. His knowledge is based in science and practical experience, and by working on radio and television.
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An otherwise healthy-looking Aralia in the garden now has this leaf curl; is that just because of the dismal summer that we've had or something more sinister?
I have an 8 yr old Beech hedge which has begun to die back in the past 3 years in sections. I have heavy clay. On reading your problem section, if the die back is caused by a root rot or fungus is there anything I can treat the ground with in order to replant and should i use a different plant type?
See attached photo of what looks like a small brown crustacean on my wisteria. The branches of my blackcurrents were also covered in these. When picked off, the surface underneath them is slightly white. The inside of the crust is covered in a minute amount of whitish powder.
I have a 10m high beech tree. The leaves at the top half of it seem to all have brown blotches and are dying, the bottom half has some but is still in a much better state. 2 years ago a similiar tree about 15m away died. A close by beech hedge is struggling with aphids but the large beech does not appear to have any. What is causing this. Can the tree be saved by cutting the top half.
Is it possible to take cuttings from a large bay tree which is planted in the ground? The tree is in good condition.
We have seed feeders in the garden for the birds; however long periods go by when no birds visit - I am wondering is there a reason. Also, we have a Nyger seed feeder for the goldfinches, but they only visit infrequently.
What is the best systemic pesticide spray for wooly beech aphids control in a young beech hedge? Also, what is the best spray for aphids in a cotoneaster hedge?
Regarding my hedge which was badly damaged by frost, but it is now showing regrowth. I asked should I cut it down. feed it or leave it alone.
I intend to plant a new shrub border in an area that has not been previously cultivated. I have sprayed the grass etc with weed killer and that is now brown. Can I avoid digging by covering the area with a thick layer of farmyard manure and leaving over the winter before planting in spring? Or can you suggest any other method that does not involve digging?
I recently planted trees and used woodchips that had been used as cattle bedding and used clean woodchips to suppress the weeds above the surface. I am now told woodchips will rob the trees of nitrogen? If so how can a compensate for or rectify this?
I got a couple of green hollies. They are quite tall but a bit thin. If i prune them will they bush out a bit more? And how much can you take off them?
I have a Griselinia hedge about 6ft high and 60ft long!!! I thought it was killed by frost as all the leaves have fallen off and there was just bare branches. However now there is a good bit of growth comming from the bottom of the plant!! Should I cut down the hedge? Feed it? Or just leave it be? Will it grow back do you think?
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