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.

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Etymology

Origin of bottom heat

First recorded in 1880–85

Example Sentences

See Examples For:

bottom heat

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

From Washington Post ● Mar. 2, 2021

Start old and young plants of Clerodendrons, Dipladenias, and Stephanotis, in a sweet bottom heat.

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 William Keane

There is no bottom heat of any kind, but it is a great deal warmer than the open soil, and serves a variety of purposes.

From Farm Gardening with Hints on Cheap Manuring Quick Cash Crops and How to Grow Them by Anonymous

Sow seed, as likewise Rhododendron, in a gentle bottom heat.

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 William Keane

Melons.—Keep up a good bottom heat when the fruit is setting.

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 William Keane