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bottom heat

noun, Horticulture.
heat artificially applied to a container in which plants are grown in order to induce their germination, rooting, or growth.
Origin of bottom heat
1880-85 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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Examples from the Web for bottom-heat
Historical Examples
  • It requires to be grown in loam and peat, and may be increased by cuttings planted in sand, under glass, in a bottom-heat.

  • It grows well in peat and loam, and is increased by seed or by cuttings of the young shoots in spring in bottom-heat.

  • It is generally budded on an orange or lemon tree and plunged in a bottom-heat.

  • Place them in a frame with bottom-heat, and water and syringe them moderately while they are growing.

  • Cuttings of the young wood planted in sand, and having a bottom-heat, will strike.

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