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bottom heat

American  

noun

Horticulture.
  1. heat artificially applied to a container in which plants are grown in order to induce their germination, rooting, or growth.


Etymology

Origin of bottom heat

First recorded in 1880–85

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Pepper seeds may take two weeks to germinate without bottom heat to the seed tray.

From Washington Post • Mar. 2, 2021

In whatever structure they may be growing, it is advisable to keep up the bottom heat by a gentle fire, or by linings.

From In-Door Gardening for Every Week in the Year Showing the Most Successful Treatment for all Plants Cultivated in the Greenhouse, Conservatory, Stove, Pit, Orchid, and Forcing-house by Keane, William

These should be pulled off with a "heel," and inserted in sandy soil in a close frame, with brisk bottom heat.

From Trees and Shrubs for English Gardens by Cook, Ernest Thomas

Give them a brisk bottom heat, and proper supplies of water.

From In-Door Gardening for Every Week in the Year Showing the Most Successful Treatment for all Plants Cultivated in the Greenhouse, Conservatory, Stove, Pit, Orchid, and Forcing-house by Keane, William

A few trees, in pots, are useful for early forcing, as they can be easily plunged in a pit or any other convenient place where a mild regular bottom heat can be supplied.

From In-Door Gardening for Every Week in the Year Showing the Most Successful Treatment for all Plants Cultivated in the Greenhouse, Conservatory, Stove, Pit, Orchid, and Forcing-house by Keane, William