BLOG back to the main blog page BLOG back to the main blog page Curated knowledge for all things cannabis growing, grower news and helpful tips. BLOG back to the main blog page back to the main blog page Curated knowledge for all things cannabis growing, grower news and helpful tips. Curated knowledge for all things cannabis growing, grower news and helpful tips. Growing tips ADVANCED TIPS Grower Spotlight Retail spotlight White papers News Growing Science Product spotlight Growing tips Grower Spotlight News ADVANCED TIPS Growing Science Retail spotlight white papers Product spotlight … When it comes to growing strong plants that resist infestations, don’t lodge and are… Read more … Like all annuals, cannabis grows in three phases (Figure 1) and many more sub-phases,… Read more … Hermaphroditism is when a plant develops both male and female reproductive organs. In cannabis,… Read more … One of the most complex parts of a grow room is the HVACD system.… Read more … Every commercial cultivator knows how much lighting matters. You obsess over spectrum, intensity, photoperiod… Read more … When the flip to 12/12 happens, the clock starts ticking on your flower room’s… Read more … There’s a difference between shaping a plant and shaping a result. In commercial cultivation,… Read more … Plant density plays an important role in cannabis cultivation. Deciding how many plants to… Read more … Cannabis requires a specific environment to grow well and yield prolifically. Temperature, humidity and… Read more … When feeding cannabis crops in hydroponic systems, growers must first prepare a stock tank… Read more … Flushing is the practice of halting fertilization before harvest and irrigating plants with plain… Read more … Plant fertilization is a sophisticated science that requires understanding both plant needs and the… Read more … Plants need secondary macronutrients and micronutrients in smaller quantities than primary macronutrients, and yet… Read more … Nitrogen, phosphorus and potassium—commonly referred to as NPK—are the three essential macronutrients. They’re called… Read more … Plant morphology refers both to the scientific study of the external physical structure and… Read more … Electrical conductivity (EC) measures a solution’s ability to carry an electrical charge. In hydroponics,… Read more … One of the biggest challenges for indoor cannabis growers is replicating the sun’s ability… Read more … Hydroponics is a soilless growing method where plants receive a water-based nutrient solution,[1] giving… Read more … The acidity or alkalinity of a liquid is measured as pH. A low pH… Read more … Plants require specific nutrients to survive and develop properly. These are called essential nutrients… Read more … Plant growth-promoting rhizobacteria (PGPR) are beneficial bacteria that colonize the root zone, acting as… Read more … Humic substances are naturally occurring compounds derived from decomposed animal and plant matter through… Read more … In agriculture, a yield gap refers to the difference between a crop’s maximum yield… Read more … Secondary metabolites are chemical compounds that plants produce to fight against threats, adapt to… Read more … When cultivating cannabis hydroponically, growers can choose between drain-to-waste and recirculating systems. In drain-to-waste… Read more … Triacontanol (sometimes abbreviated as TRIA) is a natural non-hormonal growth promoter. First discovered in… Read more … Crop steering is a cannabis cultivation technique where careful control over environmental factors guides… Read more … The vapor pressure deficit (VPD) is the difference between the moisture currently in the… Read more … When plants transpire, they move water from the roots to the shoots and release… Read more … Any comprehensive nutrient line already contains calcium and magnesium, but growers who use coco… Read more … Supplementing carbon dioxide (CO2) in the grow room is common in indoor cannabis cultivation.… Read more … Carbon dioxide (CO2) is essential for photosynthesis. The amount of CO2 available to plants… Read more … Water is the lifeblood of agriculture. Not only does water irrigate roots, but it… Read more … Pests and pathogens threaten cannabis crops. Pests—larger organisms[1] like insects and mites—physically damage plants,… Read more … Light is the primary energy source for plants. Not only is it necessary for… Read more … Produced through photosynthesis, carbohydrates are a plant’s primary source of energy, and they play… Read more … Light is a primary driver of plant growth. For many cannabis genotypes, the photoperiod… Read more … Proteins are known as “the building blocks of life”—and amino acids the building blocks… Read more … Silicon is the second most abundant element on Earth. However, most forms of silicon[1]… Read more … Although silicon is not considered an essential nutrient—plants can grow without it—it significantly boosts… Read more … Fertilizer is a crucial component of crop production, but simply adding fertilizer to the… Read more … Biofilms are slimy layers of microbial colonies that form where microorganisms grow and reproduce.… Read more … Clogs in emitters, feeding lines and drains One of the biggest challenges growers face… Read more … Many indoor growers are challenged by the height limitations of their lighting systems. One… Read more … Growers need a lot of different equipment to foster the ideal conditions for cultivating… Read more … Photos vs autos: a comparison In the wake of cannabis legalization, growers have more… Read more … In the wild, cannabis goes through three phases during its life cycle: (1) seeds… Read more … Growers can start cannabis cultivation from seeds, clones or tissue culture. Starter plants are… Read more … Cannabis can be cultivated outdoors, in an open field, or indoors, either within the… Read more … The choice of strain, or cultivar,[1] primarily depends on customer preferences. Factors to consider… Read more … Basic blends don’t have what it takes A “basic blend” is typically a simple… Read more … Silicon is the second-most abundant element in the Earth’s crust, and it bonds with… Read more … Hydroponic nutrients need to be applied in the right concentrations at the right times… Read more