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 have two types of Hedera to climb up an arch. They are supposed to reach up to about 3 mtr. but their main growth is at the base in stead of at the top. Would it be effective to prune back that base growth, or would this stimulate more growth at their feet au contraire?
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What causes a plant (chard, lettuce) to bolt? Or: how to prevent that?
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From a friend, I got what was called a 'Spinach Tree', no further info was given. Any idea, what kind of plant/care/use?
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Gerry, To my recent question on stable manure, your answer was to be careful when using it as a compost. Would it be suitable as a lawn dressing, and when, and rich or sparingly?
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Hundreds of (small-size) wasps are buzzing around in my weeping willow. On the stem and the branches there is busy traffic of wasps, and flies of all sizes, and fat blackflies. The leaves of the shrub under the tree or coloured black. So probably, flies and wasps are feeding on excreet/fungus from the blackflies. The remarkable thing is that the grass under the tree is literally covered with wasp corpses, and even more that these corpses are missing the hind tip of their abdomen, which is empty. Are they killed/poisoned, and then eaten, or are they being consumed from within? What is happening?

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Could you please explain about composting wood shavings and why there can be a problem (bacteria using up all necessary nitrogen, or something?

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