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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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this normally beautiful tree is a big disappointment this year. its planted about 5 or 6 years. i dont know if its because of the rain or what but it hasnt leafed up well at all. it seems to have struggled a lot. other acers are doing as well as always. is this one just tempermental? do you think its dying?
I'm looking to buy ladybirds (or larvae) to control greenfly on roses. They have all disappeared from our garden in recent years. Is this advisable? If so, what kind of ladybirds should I look for and where might I get them?
I have a recently planted Acer palmatum atropurpureum. I used fish, blood and bone meal at planting and put wind break up to the east and north sides of it, it got some wind from the west but now it has started to shed the most of its leaves. It got a lot of rain since planting and although the clay is a bit heavy it seems dry enough. Is there anything i could do to help it?
Our AZARA INTEGRIFOLIA small tree has developed a fungus spreading rapidly up the trunk. I enclose photo. Can you identify it for us and suggest if we can possibly cure it? If we lose it, is it safe to re-plant a tree on the same spot as it forms a cover for us? Thank you, Clare
In relation to one of your previous questions about a frost damaged cornus controversa, I also have one (planted in January) that got frost causing all the buds to go black. I removed some of these tips but even at this late stage there is nearly no leaves on it. Apart from a few black spots the stems seem healthy. Is there anything I can do to improve it's chances? Also is there any point trying to grow paulownia this far north for flower display?
I have a 2 thuja occidentalis smarged, 11 years planted in my back garden they are about 13 feet tall, and planted quite close to each other, they'er in a sheltered spot near a corner wall, there is euphorbia planted in front of them, they have turned brown in alot of places and when I touch it lumps of it fall off, this brown is spreading to the top. about 30 percent of each tree is affected. Local gardener told me to treat them with epsom salts disolved in 2 gallons of water which I did today.
I have a numer of weigela plants. They are in flower at the moment, but the cats are eating the flowers. Why do they do this and is it normal?
Lots of my shrubs and small trees have been badly burned by frost and I'm not sure what to do with them. Some of them are definitely having some die-back, so for them I just cut back to sound material. But what to do with Hydrangeas with burned leaves, and in particular a two year old Cornus Controversa which has over 50% of the leaves burned.
i have a pauls scarlet for about 7 years. it flowers brilliantly but it never seems to have anchored itself properly. it has always been staked. last year i got a jcb to put down a post to support it to and it has been great but i know from the look of it that it is still not anchored. what can i do? it is about 11 foot tall
My Kilmarnock willow hasn't any catkins for the past few years. I have it about 10 years and it had catkins for a few years - nothing since. Also, should I prune it and if so,when? There's a lot of dead wood underneath.
My Magnolia wilsonii is sick, few leaves, dying branches, damaged buds, possibly due to cold weather after early good weather. What should I do to try to rescue this favourite of mine?
Is a box hedging suitable as a low 'divider' between a garden border and a piece of meadow. Not looking for anything high - around 3ft would be fine.No animals in meadow. Something that is easily maintained when established. Any other suggestions re hedging? What are pros and cons re box?. Soil quality good. Hedge would be east-west location.
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