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

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

From Washington Post • Mar. 2, 2021

As the main use for a hot-bed is to secure bottom heat, very good results can be obtained in these cheaply constructed affairs.

From Prairie Farmer, Vol. 56: No. 12, March 22, 1884 A Weekly Journal for the Farm, Orchard and Fireside by Various

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 Keane, William

They delight in a tan-bed where the bottom heat ranges from 70� to 80�.

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

Shake out and repot in succession the stove plants that have been previously recommended to be headed back, and encourage a free growth by plunging them, if possible, in 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 Keane, William