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

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