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Thrips

By Gardeners' World on 19/10/2011 12:32:09

produce several symptoms. The leaves turn dull green with silvery-white areas, there's distortion of the shoot tips and the buds may fail to open.There are many different species of thrips, but a biological control in the form of a predatory mite can


Red spider mites

By Gardeners' World on 18/10/2011 15:52:47

and standing bowls of water on the benches between plants. Damping down the floor of the greenhouse with water will also help. When daytime temperatures in the greenhouse hover steadily around 21 celsius, you can try releasing the predatory mite, Phytoseiulus


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