Standard Cyclopedia of Horticulture

The link you followed is a reference link, meaning the information came from the following book:

The Standard Cyclopedia of Horticulture

By L. H. Bailey

New York

The Macmillan Company

The text you find on this site was used in accordance to US law and you may reuse the text under the Creative Commons license indicated at the bottom of this page, with attribution to Gardenology.org