Advanced Tips

Advanced Tips

Calcium, Silicon and Structural Integrity
When it comes to growing strong plants that resist infestations, don’t lodge and are capable of bearing prolific, heavy fruits and flowers, structural support is everything.Two nutrients, calcium and silicon, play distinct but complementary roles in building and reinforcing plant structure. Calcium forms the plant’s internal framework; silicon adds an external layer of reinforcement. Because both contribute to sturdiness, their functions sometimes overlap.This post clarifies their roles and explains how applying calcium and silicon together can help growers cultivate healthier …
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Cannabis Plant Maintenance
Like all annuals, cannabis grows in three phases (Figure 1) and many more sub-phases, or stages. Each has its own demands that require specific care and supervision, including nutrition, lighting, climate, irrigation, pruning and so forth. Meeting each of these demands is essential for maximizing plant potential—achieving the most vigorous possible growth, the most bountiful possible yield and the optimal cannabinoid profile, depending on the strain. Figure 1. Cannabis life cycle.Maintenance during propagation: caring for clones Rather than growing plants from seed, …
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Preventing and Managing Hermaphroditism in Cannabis
Hermaphroditism is when a plant develops both male and female reproductive organs. In cannabis, this occurs when female plants form pollen-producing structures in addition to buds. When that happens, the plant can pollinate itself and others nearby. Since the value of cannabis lies in the concentration of the cannabinoids produced by unpollinated female buds, hermaphroditism can ruin an entire crop.Understanding hermaphroditism Cannabis is dioecious; each plant is either male or female. Its sex is determined by genetics, epigenetics and phytohormonal regulation, …
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Understanding HVACD Systems
One of the most complex parts of a grow room is the HVACD system. In addition to heating, ventilation and air conditioning, HVACD also provides dehumidification. These systems control temperature, humidity and airflow, which influence transpiration, disease prevention and other aspects of cannabis cultivation. Designing an HVACD system that balances these factors while remaining energy- and cost-efficient requires careful planning based on the grow room’s size, plant density and other characteristics. This blog post provides an overview of why HVACD matters …
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The One Thing Growers Ignore About Lighting: Darkness
Every commercial cultivator knows how much lighting matters. You obsess over spectrum, intensity, photoperiod timing, and you hang fixtures with laser precision. But here’s the uncomfortable truth. Most lighting problems don’t happen when the lights are on. They happen in the dark. The dark cycle is a hormonal signal Cannabis is a short-day plant. It relies on long, uninterrupted nights to trigger and sustain flowering. That dark period isn’t exactly downtime, but rather a biochemical countdown. During that dark period, the plant builds …
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Crop Steering with Light: How to Tune Spectrum and PPFD for Flowering Dominance
When the flip to 12/12 happens, the clock starts ticking on your flower room’s performance. This is the point where lighting shifts from being a broad growth driver to a precision steering tool, one that can dictate how aggressively plants develop flowers, stack calyxes, and express cannabinoids and terpenes. For a commercial cannabis cultivator, flowering dominance is the result of intentional manipulation of light spectrum, intensity, duration, and uniformity—all in sync with the plant’s physiological cues. You’ve scaled your cultivation business …
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Double-Pruning for Consistency: How Two Well-Timed Cuts Boost Yield and Cannabinoid Uniformity
There’s a difference between shaping a plant and shaping a result. In commercial cultivation, pruning involves a bit of chemistry management to achieve your desired ends. The humble act of cutting a plant twice, just a few days apart, can mean the difference between a harvest that passes testing—and one that gets remediated.Let’s talk about double pruning.What is it?Double pruning is exactly what it sounds like: two intentional cuts during early vegetative growth. The first comes about 10–12 days post-transplant, after …
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Plant Density and Its Influence on Cannabis Cultivation
Plant density plays an important role in cannabis cultivation. Deciding how many plants to grow per unit area determines your cultivation strategy and influences outcomes like yield and secondary metabolite synthesis. In this blog post, we’ll discuss how plant density affects cannabis production and share strategies for managing denser canopies. Why plant density matters Plant density influences resource allocation, which in turn affects plant morphology. The closer plants grow together, the more they compete for light, water and nutrients. Plant density also …
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Automated Systems for Grow Rooms
Cannabis requires a specific environment to grow well and yield prolifically. Temperature, humidity and moisture are just a few of the environmental parameters growers must manage to keep plants thriving.An automated grow-room system—also known as a greenhouse environmental control system—helps maintain optimal conditions. Much like a home thermostat triggers the air conditioning when temperatures rise above the setpoint, these systems use sensors to monitor grow-room conditions and activate equipment to restore them to ideal levels. They also offer the added …
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Preparing Stock Solution
When feeding cannabis crops in hydroponic systems, growers must first prepare a stock tank solution—either using a complete fertilizer line from a reputable manufacturer or by mixing and matching fertilizers themselves. With a complete fertilizer line, creating a stock solution is straightforward: simply follow the manufacturer’s instructions. But for those who prefer to mix their own fertilizers, the process is more complex. Growers must understand the nutrient concentrations in each fertilizer, how much they want to feed and the dilution …
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Flushing in Cannabis Cultivation
Flushing is the practice of halting fertilization before harvest and irrigating plants with plain water instead. The goal is to remove excess salts from the growing medium and the plant.[1] Growers typically flush for two reasons: First, nutrient deprivation is believed to trigger secondary metabolite production as a stress response, indirectly increasing the quality (i.e., color, fragrance, flavor and potency) of the end product. Second, reducing the plant’s nutrient content may degrade chlorophyll, which some believe contributes to the harshness or …
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Nutrient and Fertilizer Interactions
Plant fertilization is a sophisticated science that requires understanding both plant needs and the interactions between nutrients and the fertilizer salts used to supply them. Certain nutrient combinations can interfere with uptake, while improper fertilizer combinations may lead to precipitation or other reactions that make nutrients unavailable for absorption.If you’re using pre-mixed fertilizers from a reputable brand, these incompatibilities aren’t a concern, as such products are formulated in a balanced way to ensure chemical compatibility. However, if you prefer to …
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