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Bottom heatHeat applied from below to encourage cuttings to take root quickly.
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Bottom heatThe undersurface heat provided in the soil by electric cables or hot water pipes. Bract
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Bottom heatThe application of warmth to soil or potting compost from below, these days usually by means of soil-warming cables such as those incorporated into heated propagators. The warm soil encourages the germination of certain seeds, and the speeding up of the formation of the roots in cuttings.
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