Cannabis glossary

A retailer is a licensed business that sells cannabis products directly to consumers.

A retention sample is a portion of a cannabis product kept for future testing or validation.

A returns policy outlines the conditions under which customers can return products to a retailer.

Reveg (re-vegetation) is the process of returning a cannabis plant to its vegetative state after it has begun flowering.

RH (relative humidity) is the percentage of water vapour present in the air compared to the maximum amount the air can hold at a given temperature.

A roach is the small, leftover end of a smoked joint, often saved for later use.

Rockwool/stonewool is a man-made growing medium made from spun basalt rock and is commonly used in hydroponic cannabis cultivation.

Rolling papers are thin sheets used to roll cannabis into joints for smoking.

A rolling tray is a flat, often decorative surface used for preparing cannabis joints or blunts.

A rooting hormone is a substance used to stimulate root growth in plant cuttings.

Rose is a term used to describe a floral aroma or flavour profile often found in certain cannabis strains.

Rosin is a solventless cannabis extract made by applying heat and pressure to the plant material.

A rosin press is a device used to extract cannabis concentrates by applying heat and pressure to the plant material.

One-sentence definition: A Rotovap, or rotary evaporator, is a laboratory device used to efficiently remove solvents from samples through evaporation.

RSO, or Rick Simpson Oil, is a concentrated cannabis extract known for its high THC content, often used in medical contexts.

RSO (Rick Simpson Oil) is a concentrated cannabis extract known for its high THC content and therapeutic potential.

One-sentence definition: Ruderalis is a cannabis subspecies known for its auto-flowering trait and low THC levels, often used in hybrid strains.

Runoff is the excess water that flows over the surface of the soil after irrigation or rainfall, often seen in cannabis cultivation.

A tiny pest that feeds on cannabis plants, causing damage to leaves and reducing plant vitality.

Rutin is a bioflavonoid found in many plants, contributing to their pigment and potential health benefits.