Acidity: Acidity is Indicated by a pH value Below 7.
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Aerate: Loosening or puncturing the soil to increase water penetration.
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Afghani: A short Indica land race strain from Afghanistan. Very resinous.
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Air layering: A specialized method of cloning a plant which is accomplished by growing new roots from a branch while the branch is still connected to the parent plant.
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Alkaline: Having a pH value of above 7.
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Alternate host: One of two kinds of plants on which a parasitic fungus must develop to complete its life cycle.
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Alternate: To be "located directly across from", or it can apply to stamens when between the petals.
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Annual: Completing one life cycle.
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Bactericide: A chemical compound that kills or inhibits bacteria.
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Bale: Any package of marijuana weighing over 10 lbs.
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Ballast: A transformer used mainly with HID lighting equipment.
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Bhang: An Indian and Middle Eastern drink made from cannabis.
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Biennial: Completing the life cycle in two growing seasons. Cannabis is not biennial.
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Biological Control: Total or partial destruction of pathogen populations by other organisms.
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Blight: Rapid death of a leaf. Blotch: A disease characterized by large irregular spots on a leaf.
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Blue light: Mercury based light or a Metal Halide light.
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Blunt: A joint rolled in a tobacco-leaf wrapper.
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Bong: A water-cooled pipe made from glass.
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Bonsai: The art of growing carefully trained plants.
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Bract: A small leaf or scale-like structure associated with and subtending an inflorescence or cone.
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Bud: Female flower.
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Caespitose: Growing in tufts.
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Calyx: Outer whorl of flowering parts; collective term for all the sepals of a flower.
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Cambium: The thin membrane located just beneath the bark of a plant.
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Canker: A canker is a necrotic often sunken area on a stem, trunk, or branch of a plant.
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Cannabinoids: The psychoactive compound found in cannabis.
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Chillum: A small fat pipe made of clay.
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Chlorophyll: The green pigment in leaves. When present and healthy usually dominates all other pigments. It is important in the conversion of CO2 and H2O into glucose.
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Chlorosis: Chlorosis is the yellowing of normally green tissues due to the destruction of the chlorophyll or the partial failure of the chlorophyll to develop.
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Chronic: A strain of cannabis or a high-quality cannabis weed.
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Clasping: Leaf partly or wholly surrounding the stem.
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Clones: Rooted Cuttings. Normally considered female in the context they are spoken about unless otherwise directed.
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CO2: The chemical formula for carbon dioxide.
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Cola: Refers to the main branch of cannabis flowers located at the top of the stem.
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Colombian: Common imported bud from Colombia. Also a strain.
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Compost: An organic soil amendment resulting from the decomposition of organic matter.
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Corolla: Inner whorl of floral parts; collective name for petals.
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Creeping: To creep along a structure usually using the structure for support.
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Dieback: Dieback is the progressive death of branches or shoots beginning at the tips and moving toward the main stem.
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Dioecious: The male and female flowers are on different plants.
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Disease: Anymalfunctioningofhostcellsandtissuesthatresultsfrom continuous irritation by a pathogenic agent or an environmental factor/
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Dividing: The process of splitting up plants into separate groups.
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Doobie: A common expression for hash or weed.
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Dope: A slang term for cannabis. Sometimes it is a slang term used for Heroin.
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Double Digging: Preparing the soil by systematically digging an area to the depth of two shovels.
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Epidermis: The outer most layer of cells of the leaf and of young stems and roots.
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Evergreen: A plant that never loses all of its leaves at one time.
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Fan Leaves: They are the largest leaves of the cannabis plant that gather the most available light.
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Fertilizer: A plant food, which when complete should contains all three of the primary elements -N.P.K.
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Floret: A Small flower. Flower: Seed producing structure of a plant.
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Foliar Feeding: Fertilizer applied in liquid form to the plant’s foliage in a fine spray.
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Four Twenty: (4:20), the time of day that is okay to start smoking.
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Fungicide: A compound toxic to fungi.
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Gall: Swelling of plant cells. Ganja: Term for pot derived from India but associated also with pot from Jamaica.
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Genotype: The genetic constitution of an individual, esp. as distinguished from the phenotype; the whole of the genes in an individual or group.
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Germinate: The process of the sprouting of a seed.
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Glabrous: Smooth, no hairs present.
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Glands: Refers to resin producing part of the cannabis plant.
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Glandular: Bearing glands.
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Grafting: The uniting of a short length of stem of one plant onto the rootstock or stem of a different plant.
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Grass: A very common term for cannabis.
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Habitat: Natural setting where a plant grows. Usually refers to a specific plant community.
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Hash/Hashish: Compressed Cannabis Resin.
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Hemp: This is the stalk and stems produced from the cannabis plant that are used to make fabrics.
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Herb: Another term used loosely to refer to cannabis.
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Hermaphrodite: A trait of a plant where both the male and female flowers are located on the same plant.
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HID: High Intensity Discharge light system.
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Hookah: A large water pipe from India.
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Host: A plant that is invaded by a parasite and from which the parasite obtains its nutrients.
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HPS: A high Pressure Sodium Light.
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Humus: The brown or black organic part of soil resulting from the partial decay of leaves and other matter.
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Hybrid: The offspring of two plants of different species or varieties of those species.
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Hydroponics: The science of growing plants in mineral solutions or liquid, instead of in soil.
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Indica: A species of cannabis plant.
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Infection: The formation of a parasite within or on a host plant.
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Infectious Disease: A disease that is caused by a pathogen which can spread from a diseased to a healthy plant.
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Inflorescence: The flower cluster of a plant.
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Inoculum: The pathogen or its parts that can cause infection.
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Internode : The distance between branches along the stem.
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Joint: A cannabis cigarette.
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Kief: A term from Morocco used to explain a fine grade of quality Skuff.
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Lateral: Referring to side(s) of the plant structure.
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Leaching: The removal or loss of excess salts or nutrients from soil.
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Leaflet: Segment of a compound leaf.
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Leafy: Having numerous leaves. Lesion: An area of diseased tissue, normally with a change in color.
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Linear: Resembling a line; long and narrow and of uniform width. Also refers to uniform growth.
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Loam: A rich soil composed of clay, sand and organic matter.
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Lobe: A major expansion or bulge-like shape, as at the margin of a leaf or petal.
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Lumen: A scientific measurement for luminosity from a light source.
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Manure: Organic matter, usually the excrement of an animal such a horse, which is used as a rich fertilizer.
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Margin: The edge, generally of a leaf.
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Marijuana: Another term for cannabis.
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Mary Jane: A codeword for marijuana.
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MH: Metal Halide light system.
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Micronutrients: Mineral elements that are needed by some plants in very small quantities.
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Mildew: A powdery growth on the plant’s surface.
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Mother: A selected mother plant kept for its vigor or likable characteristics by the grower. It is used for cloning and breeding.
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Mottle: Refers to irregular patterns on the leaf of light and dark areas like blotches.
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Mutation: A change in genetic material brought about by an abnormal influence such as radiation.
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Native: A plant that occurs and grows naturally in a specific region or locality.
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Necrosis: A necrosis is dead tissue on areas of the plant.
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Nematicide: A chemical compound that kills nematodes.
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Nematode: Microscopic, wormlike animals that live in water or soil, or as parasites of plants and animals.
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Node: Position on a stem from which one or more structures (especially branches) arise.
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NPK: Abbreviation for nitrogen (N), phosphate (P), and potassium (K), the three primary nutrients for plants.
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Oil: Refers to cannabis resin when it is not in a solid state.
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Organic: This refers to a method of gardening utilizing only materials derived from living things and not man made chemicals.
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Osmosis: The process by which a solvent passes through a semi- permeable membrane into a region of greater solute concentration, so as to make the concentrations on the two sides more nearly equal.
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Paraquat: A defoliant used to kill the cannabis plant around the world.
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Parasite: An organism living on or in another living organism (host) and obtaining its food from the latter.
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Pathogen: An entity that can incite disease.
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Peat moss: The partially decomposed remains of various mosses. Used as a substrate.
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Peduncle: The stalk of a flower or of a flower cluster. Perennial: Living for more than two years or growing seasons.
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Perianth: The floral envelopes; collectively the calyx and corolla, especially when they are alike.
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Perlite: A form of obsidian consisting of vitreous globules expandable by heating and used for insulation but in our case it is used as a plant growing medium.
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Petiole: Leaf stalk.
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pH: The pH is a measure of the acidity of a solution.
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Photoperiod: The timed amount of light that a plant receives.
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Photosynthesis: The chemical process in plants in which carbon dioxide and water are converted into glucose by the influence of light energy.
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Phototropism: The inclination, which plants have, to grow towards light.
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Phyllotaxy: How leaves are arranged on a branch or stem.
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Pinching: Using the thumb and forefinger to lightly crush a branch or stem which promotes further branching and causes the plant to bush more.
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Pistil: The ovule-bearing organ of a flower.
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Pollen: The male gametes or microspores of a seed plant, produced as a fine granular or powdery substance in the anthers of a flower or the male cone of a gymnosperm and usu. transported by wind or insects.
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Pollinate: Convey pollen to or deposit pollen on a stigma, an ovule, a flower, a plant and so allow fertilization.
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Pot: Another term for cannabis.
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Potency: The strength of the cannabis drug. Usually measured by the THC levels in a plant.
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Predator: A predator is an insect or animal that feeds off other animals, insects or plants.
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Pruning: The cutting and trimming of plants to remove dead or injured wood, or to control and direct the new growth of a plant.
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Red light: Usually refers to a Sodium based light (HPS).
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Reefer : Another term used for dried cannabis. Specifically a cannabis cigarette.
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Resistance: The ability of an organism to exclude or overcome a problem.
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rH: Abbreviation for relative humidity. The relative humidity is expressed in a percentage and measured with a hygrometer.
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Roach : A filter for a cannabis cigarette.
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Root ball: The network of roots along with the attached soil of any given plant.
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Root bound: A condition that exists when a potted plant has outgrown its container.
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Roots: The colorless underground, part of a vascular plant which serves to anchor it and convey nourishment.
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Rot: Rot is the disintegration, discoloration, and decomposition of plant tissue.
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Rust: Rust is a plant disease that gives a "rusty" appearance to an infected surface of the plant.
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Sativa: A species of cannabis plant.
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Scorch: Scorch is the burning or drying and browning of leaf margins. Usually caused by overfeeding.
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Senescent: The growing old and dying back of plant tissue.
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Sepal: Can mean a leaf or segment of the calyx.
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Serrated: Having jagged edges.
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Sinsemilla: Refers to non-pollinated female cannabis plants.
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Skuff: Sifted resin from the cannabis plant.
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Skunk: An old strain of cannabis that has a strong smell and sour taste.
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Spliff: A term used to describe a cannabis cigarette.
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Staking: The practice of driving a stake into the ground next to, and as a support for, a plant.
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Stamen: The male organ of the flower that bears pollen.
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Stash: A personal amount of cannabis.
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Stigma: The receptive part of the pistil.
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Stipule: Appendage at base of leaf stalk, often leaf or scale-like.
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Stoma: An organ in the leaves of plants. The stomata allow the plant to breathe.
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Stout: Thick and sturdy.
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Substrate: Refers to the growing medium.
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Susceptible: Lacking the inherent ability to resist disease.
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Symptom: The external and internal reactions or alterations of a plant as a result of a disease.
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Taxa: A group of plants, defined by the scientific plant classification system.
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Terminal: At the tip of a structure.
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Tetrahydrocannabinol/THC: The psychoactive cannabinoid in marijuana that is responsible for the high or drug effect.
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Thai stick: A cannabis sweet made by wrapping cannabis around a thin bamboo splint.
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THC: See - Tetrahydrocannabinol/THC.
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Thinning: Removing some plants to allow sufficient room for the remaining plants to grow.
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Toke: To inhale cannabis.
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Transpiration: The release of moisture through the leaves of a plant.
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Transplant: The process of moving one plant from it’s medium to another medium or another location.
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Underground: A nasty term used to describe a movement of the people who grow and share cannabis.
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Vascular: Term applied to a plant tissue or region consisting of conductive tissue.
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Vegetative: The growth phase of a plant that occurs before flowering and after the seedling stage.
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Vermiculite: Any of a group of hydrated silicates resulting from the alteration of biotite and ultra basic rocks; spec. a monoclinic aluminosilicate of magnesium occurring as platy yellow or brown crystals or foliated scales. Flakes of this mineral used as a moisture- holding medium for plant growth or a protective covering for bulbs etc.
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Virus: Asubmicroscopicobligateparasiteconsistingofnucleicacid and protein.
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Weed: A common term used to describe cannabis. Whorl. Group of three or more structures of the same kind (generally leaves or flower parts) at the same node.
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Wilt: Wilt is what happens when the leaves of a plant droop.
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Zonked: To be very stoned. Usually refers to the Indica type high.
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