Medical Marijuana Glossary

Medical Marijuana Glossary

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neutral compound of carbon, hydrogen, and oxygen, mostly formed by green plants: Sugar, starch, and cellulose are carbohydrates

Carbon Dioxide (CO2)

a colorless, odorless, tasteless gas in the air; necessary for plant life


a substance that destroys, kills, or eats away by chemical activity


the base structural unit of plants: cells contain a nucleus, membrane, and chloroplasts


a complex carbohydrate that stiffens a plant: Outdoor stems contain more stiff cellulose than plants grown indoors


a scale for measuring temperature where 100 degrees is the boiling point of water, and 0 degrees is the freezing point of water


combining nutrients in an atomic ring that is easy for plant to absorb


a plant or organism with tissues from at least two genetically distinct parents


green photosynthetic matter of plants: Chlorophyll is found in the chloroplasts of a cell and is necessary to photosynthesis


the condition of a sick plant with yellowing leaving due to inadequate formation of chlorophyll: Chlorosis is cause by a nutrient deficiency


microscopically small, dark-staining bodies visible in the nucleus of a cell at the time of nuclear cell division; the number in any species is usually constant - cannabis has 10 pairs of chromosomes


a circular route traveled by electricity from a power source, through an outlet, and back to ground


soil made of very fine organic and mineral particles: Clay drains slowly and is not suitable for container gardening


the average condition of the weather in a grow room or outdoors


1. a rooted cutting of a plant 2. asexual propagation

CO2 Enrichment

used to augment grow room or greenhouse atmosphere to speed growth


Mexican and North American slang word for marijuana flow top: Cola in Spanish actually means tail


poisonous alkaloid from the autumn crocus, used in plant breeding to induce polypoid mutations


for cannabis, air temperatures below 50 F (10 C)

Cold Frame

an unheated outdoor structure usually clad in glass or clear plastic, used to protect and acclimatize seedlings and plants 

Color Spectrum

the band of colors (measured in nm) emitted by a light source

Color Tracer

a coloring agent that is added to many commercial fertilizers so the horticulturist knows there is fertilizer in the solution


soil condition that results from tightly packed soil which limits aeration and root penetration

Companion Planting

planting garlic, marigolds, etc., along with cannabis to discourage pests


mixture of decayed organic matter, high in nutrients: Compost must be well-rotted before use

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