Sativa -- Sativa is a hard plant to grow indoors due to high lighting requirements, tall stature, and late flowering traits. Sativas come from equatorial regions, thus the neccesity for high ammounts of lighting and a warmer tropic-subtropic climate. You can identify a Sativa by its long, slender, finger-like leaves. A Sativa will typically produce a euphoric, energetic, cerebral high. Despite the Sativa's climatic limitations, they are truly a reward to obtain, grow, and smoke. A pure Sativa will take 2 to 4 months to finish flowering.
ScrOG/ SOG -- "Screen Of Green" method. The purpose of ScrOG is to maximize your usage of the available space and lighting by training the new growth of a plant into a screen or mesh. What is ScrOG?
Seed Casing The integuments of the ovule, which are the ovule's old coverings, harden and become the seed's protective coat
Sensimilla - Spanish for 'without seed', AKA sensi, having a female plant bud without letting a male plant pollenate it, thereby preventing seeds from forming in the buds. This increases THC potency and smokable bud weight.
Sepal -- Sepals are components of the calyx. Located at the base of the flower, these modified leaves usually function as protection for the petals while in bud stage. Occasionally, sepals will be colored, but they are usually green
Sex - verb. The act of determining the gender of a plant by giving it a photoperiod of 12/12.
Stamen --This is the male reproductive organ of a plant, located in the androecium of the flower. It has two components: the filament and the anther..
Stigma: The sticky tip of a pistil.
Strain - refers to the specific genetics of the plant. Example: White Widow, Northern Lights.
Stomata: Opening in the epidermis of a leaf which permit gas exchange with the air.
Stress - Any unhealthy stimuli the plant receives. Examples: Light-burn, overwatering, nute-burn. Stress can cause slow growth, mutations, or death.
Sun Leaves - AKA fan leaves, these are the large leaves that grow off of branches, and while not rich in THC, they play an important role in photosynthesis.
Synthetic Nutrients - AKA Chemical nutrients, concentrated and industrial-made nutrients. They have a longer shelf-life than organic nutes, but are known to nute-burn a plant more quickly.
THC -- a. Tetrahydrocannabinol A compound, C-21 H-30 O-2, obtained from cannabis or made synthetically, that is the primary intoxicant in marijuana and hashish.
b. The main physcoactive ingredient in pot. this is what gets you "high!". it is often(not totally accurately) measured by the trichomes(fairy dust) visible on pot.
Topping Method used to increase yield and maximize space, by trimming off the top bud. Traditionally, topping your plant causes two shoots to grow back in place of the one pruned off, thus increasing the number of top/main buds
Transplanting Shock -- When transplanting seedlings from one place to another, the roots are often disturbed and occasionally the change in climate can cause the plant to slow down or appear to stop growing. This is transplant shock. It is really redirecting it's energy to re-grow lost roots and to get accustomed to a change in temperature that it hadn't experienced before.
Trichomes - AKA crystals or sugar, they are tiny, mushroom-shaped capitulate glands full of THC that form on the flowering buds and bud leaves of cannabis.
Vascular: Refers to the xylem and phloem tissues, which conduct water and nutrients through the plant body.
Vermiculite -- is sterile and light in weight (5 to 8 lbs/ft3). The pH of vermiculite will vary depending on where it is mined. Most U.S. sources are neutral to slightly alkaline, whereas vermiculite from Africa can be quite alkaline (pH = 9). Vermiculite is used extensively in the greenhouse industry as a component of mixes or in propagation. It is usually sold in four size grades: #1 is the coarsest and #4 the smallest. The finer grades are used extensively for seed germination or to topdress seed flats. Expanded vermiculite should not be pressed or compacted, especially when wet, as this will destroy the desirable physical properties.
Ventilation - Circulating air in order to provide the plant with fresh air and/or to reduce the temperature in the grow area. Air movement also encourages strong stems.
Watering Schedule - term referring to how often and how much water a plant is given, usually measured in days and gallons. Ex: 1 gallon every 4 days.
Watts -- A measure of the amount of electricity flowing through a wire. Watt hours measure the amount of watts used in one hour. A kilowatt/hour (KWH) is 1000 watt/hours.
Worm Casting -- (Vermiconversion) or using earthworms to convert waste into soil additives, is a biologically active mound containing thousands of bacteria, enzymes, and remnants of plant materials and animal manures that were not digested by the earthworm. The composting process continues after a worm casting has been deposited. In fact, the bacterial population of a cast is much greater than the bacterial population of either ingested soil, or the earthworm's gut. An important component of this dark mass is humus.
