Clarke RC: Marijuana Botany
USA 1982 - 198pp
material in this book is presented as information which
should be available to the public. The publisher does
not advocate breaking the law. However, we urge readers
to support NORML in its efforts to secure the passage
of fair marijuana legislation."
contains forewords from Richard Evans Schultes and Mel
Frank. The preface contains a brief history of cannabis
and an account of potential agricultural uses.
is an account of the life cycle of cannabis. It is written
in botanical language using Latin terms which (although
explained) would tend to confuse the general reader.
There are diagrams of all the major stages in the life
- sexual and asexual propagation - discusses the deliberate
cultivation of cannabis for seed, including careful
recording of the types of pollen and female plants used.
There is a lengthy section about taking cuttings, including
rooting media, soil selection, and different methods
(e.g. air layering) of producing cuttings and clones.
There is a brief discussion of grafting, and information
on pruning, and physically training the plant to grow
in particular ways.
is an 70 page manual on the genetics and breeding of
cannabis for specific traits (height, colour, flowering
time etc.), including various dominant/recessive characteristics,
and other genetic information. This is unlikely to be
of interest to the casual grower, more so to the professional
discusses maturation and harvesting, the effect of photoperiod
on flowering in temperate and tropical latitudes (with
a diagram often reproduced elsewhere), as well as biochemical
information on cannabinoid biosynthesis, timing of the
harvest, and factors influencing THC production. There
is a section on harvesting, drying and curing.
appendices on taxonomy and nomenclature (classification
of cannabis), ecological factors, sex determination,
glandular and non-glandular trichomes, cannabinoid biosynthesis,
growth and flowering. There is a glossary, bibliography,
and index. Two pages of advertisements for other publications.
I would not describe this book as a growers guide as
such, although the information may be used by growers
to produce or improve their crop. It is more of a botanical
reference work, well-researched and technical in language,
academic rigour and subject material. It does not amount
to a step-by step guide to growing cannabis, containing
no instructions on setting up a growroom or on cultivation