Bottom heat

Standard Cyclopedia of Horticulture

Bottom Heat. Soil temperature that is higher than that of the superincumbent air. Most tender plants require to have the roots warmer than the tops, particularly when grown under glass. The above text is from the Standard Cyclopedia of Horticulture. It may be out of date, but still contains valuable and interesting information which can be incorporated into the remainder of the article. Click on "Collapse" in the header to hide this text.