A hydroponic growing technique where roots are suspended in the air and a formulated salt base nutrient solution is finely misted onto the roots for delivery within the plants system. 


A style of aquaculture where the plants get their nutrients from waste of the fish in tanks.  The cycle of cooperation between plants and fish being symbiotic by mimicking a natural ecosystem.


A hydroponic growing technique similar to DWC where plant roots are suspended above a nutrient solution. In this style large amounts of oxygen are generated by incorporation of air stones to the solution. A water pump than pumps water to the top of the plants and it drains through the roots back into the reservoir.


Deep Water Culture A hydroponic growing technique where plants are suspended above a nutrient solution. In this style large amounts of oxygen are generated by incorporation of air stones to the solution. The word Deep indicates that the roots are placed deep into the water for best explosive growth.

Ebb & Flow

A hydroponic system also known as flood and drain. This technique requires a flood table and a reservoir for holding water and nutrients. In this technique water is pumped into the flood table until it covers the base of the plant. Water is than drained out of the flood table back into the reservoir.

Flowering Time

The amount of time a cannabis time needs after transitioning a plant from a vegetative state to a flowering state. Flowering time varies by strain but is typically known to be between 8 and 9 weeks long.


This style of growing uses inert growing media such as rockwool, hydroton or coco coir. In this method, all nutrients are provided to the plants with nutrient salts mixed into water. As opposed to natural growing where the soil provides the nutrients.

Indoor Growing

The process of growing indoors so that environments can be manipulated to the perfect growing conditions year round. Upside is that you have complete control of the environment. Downsides are the costs associated with electricity and a large building.


Nutrient film technique (NFT) is a hydroponic technique where in a very shallow stream of water containing all the dissolved nutrients required for plant growth is re-circulated past the bare roots of plants in a watertight gully, also known as channels.

Outdoor Growing

Natural growing using the sun and soil. Downsides of this type of growing is you are limited to one season. Upsides are that the cost is substantially lower to produce a product because it is using the sun for its energy.

Harvesting and Processing


This term describes the act of removing the flower from the stems of the plant after it is harvested. This usually happens before trimming the flower.


The term used to describe a plant that has fan leaves removed strategically to let in light onto the inner flowers.


Kief is the after product of trimming a cannabis bud. These are the trichomes that fall off when handling the plant in a tacky powder form. The keif can be collected in the bottom of a tray when trimming and used to add onto the top of cannabis when smoking as an extra. The keif generally has a strong THC level compared to flower because of its purity.

Moisture Content

The amount of water left over in a cannabis flower after drying. Moisture content is important in cannabis because if it does not fall below a certain threshold it could cause the flower to mold.


Cloning Rack

A rack with shelves spaced 1 to 2 feet apart with multiple shelves. This is made to hold smaller plants that were just cloned.

Colloidal Silver

A type of liquid with microscopic flakes of silver. In cannabis it is sprayed onto a part of a plant that you want to become a hermaphrodite. Commonly used in the process of making feminized seeds.

Cure Room

A room designated for curing cannabis This room is typically colder and has a lower humidity to keep the buds fresh.

Dry Room

A room designated to dry harvested cannabis plants. Typically this room is cold and has plants hanging with a lower humidity to aid in the drying process before the plants can be trimmed.

Flood Table

Hydroponic flood tables or trays are used typically in a flood drain method. This table is usually 6 to 8 inches deep with a drain for putting water in and taking it out after a flooding event.

Grow Bench

Grow benches are typically used in greenhouses or indoor grows where only 1 grow level is required. This system holds a tray for growing off of the ground between 12 and 36 inches high. Some are static while others are mobile.

Grow Room

A grow room is where you would typically flower your cannabis plants. This room can be used for Vegetative growth as well.


A substance natural or synthetic that is used to kill insects that are harmful to plants.

TDS Meter

A meter that checks for Total Dissolved Solids in water. These readers can give you results in TDS, EC or PPM. Commonly used to check how high the PPM or EC is of a nutrient solution.

Vertical Grow Rack

A vertical grow rack is typically used in an indoor setting where a grower is trying to maximize space by building a bench system that can stack on top of each other.



18 hours of light and 6 hours of dark. This lighting scheme is used during a vegetative state to keep the plant from going into flower mode. Some growers use this method because of their belief that indoor grows should mimic nature.


Light left on for 24 hours. This lighting scheme is used during a vegetative state to keep the plant from going into flower mode. Some growers use this method because they feel like they can grow a plant quicker with 24 hours of light.

Dark Period

A period of pitch black used when growing cannabis to mimic night time.


High Intensity Discharge is a gas discharge light commonly used in cannabis Among the common types of HID lights are mercury vapor, low and high pressure sodium and metal halide lamps.


High Pressure Sodium a type of HID Lamp.


Light Emitting Diode. Commonly used in indoor growing these lights are higher priced than the HID lights but use less electricity and put off less heat. LED lights spectrum can be designed with wavelengths of light specifically for growing plants. The lights do not need to be changed annually which makes it a better long term investment.

Light Deprivation

To deprive the plant of light by blocking out either sunlight or by turning off grow lights.

Light Leak

A tiny leak of light during a dark period that can cause a plant to become stressed and potentially hermaphroditic.

Light Schedule

A schedule of light and dark periods. Typically 18-6, 24-0 and 12-12


Is a measure of the amount of the brightness of a light bulb.

Medium and Food

Coco Coir

A growing medium used in hydroponics made from the outer hull of a coconut. It has a great capacity for holding water and its inert capabilities make it work great as a soilless medium.


Electrical Current typically used as an EC Meter. This product is used to measure the amount of salts in a solution. Often converted to PPM to check Parts Per million.


Used to describe the injection of fertilizers, used for soil amendments, water amendments and other water-soluble products into an irrigation system.


The process of running clean water over the roots before harvest. This has been said that it can take the fertilizer taste out of the dried flower but there are conflicting views on this.


Excrement of sea birds and bats collected and used as a natural fertilizer.

High-frequency Fertigation

With standard fertigation an amount of water is run over the plant once to 3 times a day. With High-frequency fertigation the plants are watered with smaller amounts throughout the day with short burst so that at the end of the day you will have done a complete watering.

Living Soil

According to the National Cannabis Industry Association (NCIA), the definition of living soil is the community of microbes working together breaking down organic matter which, in turn, provides valuable nutrition to the plants. Soil microbes are essential for decomposing organic matter and recycling old plant material.


A substrate that is mixed together for the purpose of growing a plant outside of the natural ground or out of the soil.


The three Macronutrients required for all plants Nitrogen, Phosphorus and potassium. Typically seen on a nutrient container in the order or the amount that is in the product a 10 10 10 would be equal but a 10 5 2 would be higher in nitrogen half that amount in Phosphorus and ⅕ the amount in Potassium.

Nutrient Water

Water that is used in the fertigation of plants that has a specific amount of Macronutrients and Micronutrients in it. These nutrient mixed together with a specific amount of water is called a nutrient water.

Plant Anatomy


An oval sac on the end of the stamen. This sack holds pollen before it is released.


A green teardrop shaped leaves that are covered in resin and encapsulate the female reproductive parts.


Another term for the flower of a cannabis plant.


A translucent layer at the flower’s base. Often confused with a bract.

Cannabis Leaf

A leaf that comes off a cannabis plant.


The first two embryonic leaves that appear when a seed breaks out and the shell falls of.

Fan Leaf

A fan leaf on a cannabis plant is used for collection of sunlight. These are the large leaves that are not connected to the forming bud.


Another name for the fruit of a cannabis plant.


A series of spots on a cannabis leaf that have different colors from browns to greens and yellows. Often splotchy. Typically caused by stress or nutrient deficiency.


A node is on the stem and connects the offshoots to the other parts of the plant.  Kind of like an intersection.

Plant Conditions and Diseases

Cannabis Cold Stress

Cannabis plants are tolerant to certain temperature ranges and will start to show signs of deficiency and lack of health when the temperature goes below the 75F threshold.

Cannabis Heat Stress

Cannabis plants are tolerant to certain temperature ranges and will start to show sign of deficiency and lack of health when the temperature goes above 85F which is the threshold. Higher temps are known to be tolerated when room is induced with elevated levels of CO2.


A term used to describe a plant that is low on water its leaves have a noticeably limp look to them.

Light Stress Cannabis

Caused by either too much light or by not observing the dark schedule during flower. This stress causes the plants to hermie or stunt growth.

Nute Burn

A term used to describe a burn in the leaf caused by an excessive amount of nutrients being uptaken.


A term used to describe a plant container being too wet, this can lead to root rot and nutrient deficiency.

Root Rot

Plant disease that typically has decay of the roots. Can be caused by overwatering or other diseases.


A term used to describe a plant that looks unhealthy due to external conditions that are not favorable to the plant’s growth.



Another term for the flower in the plant. The cola would be several flowers combined together on a branch where the largest colas tend to be near the top of the plant.


A term used to describe a plant has small poorly formed buds usually in the middle to the bottom of the flowering plant.


Leggy describes when a plant has large internodes in between flower sites.


This practice happens around week 2 of flower. This concept removes all fan leaves from the plant so that energy can be directed towards the buds and light reaches further into the canopy.

Sugar Leaf

The small leaves on a flowering cannabis plant that surround the bud. These leaves would be covered in trichomes and it is part of what makes the flower sticky.


As opposed to indoor grow, the plant gets its energy directly from the sun and would be grown outside or in a greenhouse.