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'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!

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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.

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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.

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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.

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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...

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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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