Marijuana Horticulture: The Indoor/Outdoor Medical Grower's Bible

induced vegetative growth with 18-hour days and 6-hour nights the day after harvesting. A month later, he took many clones from these original favorite females. He induced the original mothers to flower a month after the clones were taken. The clones were rooted, transplanted, and moved into a flowering room. The original harvest was taken on January 1st. The second harvest was April 1st. The second harvest weighed less, and the buds were smaller. Taking clones from rejuvenated plants also diffuses hormones and severely stresses plants.

This female received 18 hours of light daily. A mistake made it receive a 12/12 day/night schedule for three days, which induced flowering. The grower put it back on an 18/6 day/night photoperiod. The plant took 6 weeks to resume normal vegetative growth. The light stress also caused leaves to grow in circles!

Chapter SIX
GROW ROOMS & GREENHOUSES

    Female plants in this Colombian greenhouse are sheltered from daily rains.

This barrel full of water shows that cannabis will grow only as fast as its most limiting factor. Light is most often the factor that limits growth indoors.

Introduction
    The best location for a grow room is in an obscure corner of a basement, where the temperature is easy to keep constant year round. Basements are well insulated by concrete walls and soil. A basement room can be enclosed and camouflaged with junk, a double wall, workbench, or shelving.

    Added security is afforded by installing a false door in a closet. The grow room is located behind the secret door. Another good secret location, except for the possible heat build-up, is the attic. Few people venture to an attic that is difficult to access. Some growers locate their gardens below a trapdoor covered with a rug.
    Law enforcement cannot use the electricity bill as sole grounds for a search warrant. But, they can use it along with other “evidence” such as remnants of indoor growing visible outdoors, thermal image heat signatures, snitch testimony, etc., to secure a search warrant. As long as the marijuana grown is not sold or shown to a snitch, there should be no reason for any suspicion. Thermal image technology is easy to outwit. Just keep the lights on during daylight hours to confuse the technology. Or, cool exhaust air and expel it under the well-insulated grow house so it does not leave a heat trail.
    Outbuildings, garages, and barns not attached to homes are some of the worst places to grow cannabis. Thieves and law enforcement often do not regard entering a barn or garage as a crime, though they would not consider entering a home. Security is much better when the garden is within the home.

This cutaway basement grow room shows a real scenario. Plants on tables stay warmer and are easy to maintain.
    Although less common, there are even grow rooms on wheels! Some innovative growers have remodeled trailer houses and buses into grow rooms. One of my favorite grow rooms was in a tricked-out trailer. Another was in a 60-foot (18 m) sailing yacht!

    The grow room’s size determines the size and the number of lamps. High intensity discharge (HID) lamps that work well to grow marijuana are available in wattages of 150, 175, 250, 400, 600, 1000, and 1100. Smaller wattages from 150-400, work well in closets or spaces with 9-21 square feet (0.8-2 m 2 ) of floor space. Use 600-watt and larger bulbs for larger areas.
    The drawings (pages 108-109) show several grow room floor plans. As the floor plans demonstrate, there are several basic approaches to grow room design and production. Most growers start out with a crop grown in a single room. After they harvest the crop, they introduce a new batch of clones. The photoperiod is switched back to 18 hours, and the cycle continues.

This indoor setup has a big flowering room, a vegetative room, and a clone chamber.
    The most productive setups utilize two rooms. The first room is for vegetative growth, mother plants, and rooting clones. This room should be about one-quarter the size of the flowering room. When the flowering room crop is harvested, plants from the vegetative room are moved into the flowering room.

This productive grow room is located in a closed-off corner of the basement.
    Super productivity is achieved with a perpetual crop. Several clones are taken every day or every week. Every day a few plants are harvested. For every plant harvested, a new cutting takes its place.

Take a little time to set up your grow room so all the space is used