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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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I have 2 hazelnut trees in my garden, there are small shoots growing at the bottom of the trees, could i use these shoots to grow more hazelnut trees and if so what would i need to do.
My Leylandii hedge is turning brown like if it's dying. Can you tell me what might be wrong it's about 18 years sowed?
I have grass growing up through my heather. The heathers were planted several years ago and we used a black membrane to stop weeds. However the grass is shooting up through it and when it try to pull the grass it breaks and I am unable to get the roots. Do I need to dig it out and start again?
I have a problem with my tomatoes, the skin 's are splitting, Is there a recommended amount of water per plant or per square yard
I got a present of an Orchid today. I don't know its name. It is in a plastic container and it looks to be set in bark. There seems to be about 3 rings of root at the bottom. Since its bark, the water will just run through. How do I know when and how much water to to give it?
Have to cut back a mixture of different shrubs that have exceeded their space. I know that pruning now will give risk of infection in pruning cuts. New growth should harden off before winter as far as I know. Some will have to be cut back hard as well. Any advice?
Do you know what kind of weed this is? It is growing near the roots of one of the shrubs in my garden and I am reluctant to put week killer on it in case I damage the shrubs. I have dug it out before and put wood chip down. Any other suggestions would be great.
I transplanted red dogwood I found in the bog earlier this year. It started to grow and looked well, new leaves and all. Now leaves are turning black on some plants and all the green vegetation is blackening on those sick plants. I am afraid it might spread - what ever it is?
I've a syringa vulgaris lilac bush that is not in great soil. While its healthy, its struggling to grow. I have it about 5 years and want to transplant it to a better area. It's nearly 4ft tall. Would replanting damage it and do you know what type of soil would be best? I'd like to do it now that the flowers have died off. Thanks!
My Hyacinth Carnegie and Muscari blue grape variety are now falling back but I've noticed small tomatoe type growth on the stems. Are these new seeds/bulbs ? and what should I do with them. Also how far back should I cut out of season stems such as above and tulips for.
I have a Robin Red and a golden maple next to each other. Both are covered in a tiny black insect. On the maple the insect appears like black spots on the leaves. On the Robin Red the insects are grouped on the stems. What is the best way of treating this? Thank you.
I'm planning a new build the site has been chosen (not in Dublin) but there are approx 150 year old, 50-60 foot tall beech and chestnut trees on the site, could you recommend a safe distance the house should be from these trees root wise? Going at least the height of the trees from the house anyway.
Had an idea to run by you. Could one recreate a greenhouse/polytunnel effect by training tomatoes and peppers vertically on a sturdy steel frame and draping it with plastic? Could you envisage improvising an otherwise expensive fruit cage? Trying to work out how to grow a few plants...
I have a number of pear trees in my garden which last year showed signs of pear scab and a blackening of the leaves. I have looked in various places for a suitable spray but have been unable to locate one. I note Jeyes Fluid is recommended in some circumstances but only when trees are dormant. Is it too late to spray for this year? If not what should I use and where can I get it? (I have tried a number of garden centers but they only had insecticides).
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