bottom heat

noun

, Horticulture.

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

Word History and Origins

Origin of bottom heat¹

First recorded in 1880–85

Example Sentences

After this dressing, the plants needed not to be moved again till they ripened their fruit, unless they required more bottom heat.

From Project Gutenberg

Mr. Gunter tried to substitute the heat of steam for that of tan, as a bottom heat, but did not succeed.

From Project Gutenberg

A bottom heat will be necessary when they are repotted, which may be done in about three weeks or a month.

From Project Gutenberg

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

From Project Gutenberg

To be then favoured with a bottom heat of from 75 to 80, and slightly shaded during bright sunshine.

From Project Gutenberg