large system using several large wattage
lamps spins the meter. The heat created in
a small system is easily dissipated into the
surrounding environment, especially during
cool months. A large system requires a
more sophisticated heat exchange system.
Marijuana has two distinct parts to its
growing cycle. First it grows vegetatively,
then it goes into flowering. During the
vegetative cycle the plants receive lighting
continuously or for a minimum of 18 hours
a day. During the flowering cycle they
receive fewer hours of light. For this reason
it is convenient to separate any garden into
two separate units, one for vegetative
growth and one for flowering. The
vegetative growth unit need not necessarily
be large since it is used mostly for starting
seeds and clones.
In the most efficient growing system,
plants are grown in the vegetative section
until they are 8-12 inches high and then are
placed in the flowering area. The vegetative
section requires about 1/3 the space of the
flowering section.

Chapter 3

THE SPACE

Gardeners who I have observed have
converted all kinds of spaces to grow
rooms: closets, small rooms, pantries,
basements, attics, and small sheds. The
space must be high enough to allow the
plants to grow to 2-3 feet height. A space 4