|HEMPOLOGY.ORG: THE STUDY OF HEMP
Source: 1917 Yearbook of the United States Department of Agriculture
Author: W.W. Stockberger, Physiologist in Charge of Drug-Plant and Poisonous-Plant Investigations, Bureau of Plant Industry
Pages: Excerpts from 169 & 171
PRODUCTION OF DRUG-PLANT CROPS IN THE UNITED STATES
Medicinal plants have been cultivated in the United States for more than two centuries. Only a few decades have elapsed since healing herbs shared with small fruits and vegetables a place in every kitchen garden, and in certain localities their production and sale at one time formed the basis of small industries. In time, however, the numerous convenient preparations obtainable at every drug store rendered the domestic herb garden no longer necessary, and the great development of foreign commerce made it possible to obtain supplies of most crude drugs from sources where the cost of production was less than in this country.
. . .
Cannabis is now grown commercially as a side line by a few farmers in South Carolina and by occasional individuals in some other States. Two large drug manufacturers also grow sufficient cannabis for their own needs. Considerable technical skill is required to produce cannabis of a quality that will meet the standard requirements for this drug. Cannabis grown in some localities is deficient in the active principles upon which its value depends, and preliminary tests to determine the quality of the product are therefore always advisable before planting this crop on a commercial scale.