RDWC
Environment, Media & Nutrition
Definition: RDWC, or Recirculating Deep Water Culture, is a hydroponic system where cannabis plants grow in oxygenated, nutrient-rich water.
Cannabis Dictionary
Cannabis glossary
Glossary results
Terms starting with R
Showing 1-4 of 4 matching terms in Environment, Media & Nutrition
RH (relative humidity)
Environment, Media & Nutrition
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.
Rockwool/stonewool
Environment, Media & Nutrition
Rockwool/stonewool is a man-made growing medium made from spun basalt rock and is commonly used in hydroponic cannabis cultivation.
Runoff
Environment, Media & Nutrition
Runoff is the excess water that flows over the surface of the soil after irrigation or rainfall, often seen in cannabis cultivation.
Quick lookup
PopularBrowse A-Z
CategoriesEnvironment, Media & Nutrition
All categoriesCannabinoids & RelatedCommunity, Culture & Slang (SFW)Consumption Methods & AccessoriesCultivation Stages & TechniquesDosing, Potency & EffectsEnvironment, Media & NutritionExtraction & ProcessingFlavonoids & PigmentsHarvest, Dry & CureLab Testing & QA/QCLegal, Compliance & Canada-SpecificPests, Pathogens & DisordersPlant, Botany & AnatomyProducts & FormatsRetail, Delivery & OpsSensory & DescriptorsTerpenes & Aromatics
Learn what the terms mean in context
Use the glossary with the rest of CannaRadar.
Definitions help most when they connect to products, strains, and local shopping decisions.
Quick answers
Cannabis glossary FAQs
What is the CannaRadar Cannabis Glossary?
An A–Z index of clear, plain-language definitions for cannabis terms, labels, and common slang, with links to deeper guides.
Is this medical advice?
No. The glossary is educational only and follows Canadian compliance guidelines.
How often is it updated?
New terms are added and existing entries are reviewed for clarity and labeling accuracy.
How can I request a new term or correction?
Use the contact form and include the term plus a suggested definition. Contact CannaRadar