Germination Part 5:
You’ve germinated your seeds, nurtured your seedlings, trained your vegging plants—and now it’s time to bloom.
The flowering stage is where CBG-rich buds begin to form, and with the right timing and techniques, you’ll maximize both your cannabinoid content and harvest yield. But growing CBG isn’t like growing THC-heavy strains—you’ll need to make a few strategic adjustments along the way.
In this article, we’ll cover how to optimize flowering for CBG production, when to harvest, and how to preserve the CBG molecule through drying and curing.


READ OUR REPORTS
At CBGseedsource.com we provide reports on all our seeds sold. You can view any report from our Reports page by clicking the link below.
Reports Page:
👉 CBG Reports


Understanding the CBG Flowering Cycle
Unlike THC or CBD, CBG is the precursor cannabinoid—meaning the plant naturally converts CBG into other cannabinoids (like THC and CBD) as it matures.
That’s why timing is everything when growing CBG-dominant strains.
đź•’ Flowering Timeframe:
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Most CBG strains flower in 7–9 weeks, depending on the cultivar
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Harvesting too late can lead to degradation of CBG into other cannabinoids
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Monitor trichomes early and often for optimal timing (more on that below)
🌸 Signs Flowering Has Begun:
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Light schedule change to 12/12 (12 hrs light / 12 hrs dark) triggers bloom
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Plants stretch and begin forming pistils and bud sites
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Aromatic profile starts developing—often earthy, floral, or citrusy depending on genetics

Optimizing the Environment for CBG Flowering
🌡️ Temperature & Humidity:
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Maintain 65–78°F (18–25°C) during lights-on
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Lower humidity to 40–50% to prevent mold and mildew
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Keep nighttime temps only 5–10°F lower than daytime
đź’ˇ Lighting:
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Use full-spectrum LEDs or HPS lighting during bloom
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Ensure strong penetration to lower bud sites
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Watch for light stress or bleaching on taller colas
🌬️ Airflow:
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Constant circulation with oscillating fans
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Proper exhaust and carbon filters to manage humidity and odor
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Avoid stagnant pockets of air in dense canopies

Nutrients for the Bloom Phase
CBG plants need a shift in nutrient profile during flower:
🌿 Nutrient Focus:
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Lower nitrogen
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Increase phosphorus and potassium
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Consider calcium/magnesium support for healthy flower sites
⚠️ Be cautious with overfeeding—CBG strains often prefer light feeding schedules. Flush properly toward the end of bloom to preserve taste and purity.
When to Harvest for Highest CBG Content
Harvest timing for CBG is more sensitive than for THC or CBD strains. Because CBG converts into other cannabinoids as the plant matures, early harvest is critical.
🔬 Use a Microscope to Check Trichomes:
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Look for clear to slightly cloudy trichomes—not amber
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Harvest before the conversion to THC or CBD begins
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Check multiple bud sites, not just the tops
🗓️ Many growers find the sweet spot between day 42–52 of flowering, but this can vary by strain. That’s why growing from lab-tested seeds like those at CBG Seed Source is essential—we give you accurate timing data for every strain.

Drying, Curing, and Preserving Cannabigerol
CBG is sensitive to heat, light, and oxygen. Proper post-harvest care will preserve cannabinoid content and terpene profile.
🌬️ Drying:
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Hang plants in a dark room with 50–60% humidity and 60–70°F
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Dry for 7–10 days until stems snap instead of bend
đź«™ Curing:
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Trim buds and place in airtight glass jars
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Open jars daily (burping) for 10–14 days
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Store in cool, dark place to prevent cannabinoid breakdown
💡 Pro Tip: Avoid high heat during drying—CBG degrades faster than THC if temps exceed 75–80°F for long periods.
🔍 Flowering & Harvest Checklist
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âś… Monitor trichomes for early harvest
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âś… Use a bloom-focused nutrient regimen
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âś… Keep humidity low and airflow strong
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âś… Dry and cure gently to protect CBG
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âś… Confirm seed genetics and testing before your next grow

Compliance, Testing, and Quality Assurance
At CBG Seed Source, we work with professional labs to test every batch of seeds for germination rate, genetic consistency, and CBG potential.
Here’s why that matters:
âś… Highest Germination Rates in the Industry
âś… Stable CBG-Expressing Genetics
âś… Proven CBG Content Under Ideal Conditions
🌱 Whether you’re growing for a licensed market or personal wellness, consistency is everything. Lab-tested seeds ensure your hard work delivers results you can rely on.
What’s Next?
CBG may be one of the most exciting cannabinoids on the market, but it demands precision and care—from germination all the way to harvest.
With the right training, timing, and post-harvest process, you’ll be able to grow cannabinoid-rich flowers that are clean, potent, and consistent.
👇 Ready to Grow?
Explore our full selection of high-performance CBG strains, all lab-verified and bred for high germination success, at CBGseedsource.com.
💬 Got questions about flowering or post-harvest techniques? We’re growers too—and we’re here to help you succeed.
🌱 CBG Seed Source: Grow with Confidence.


💬 Questions? We’ve Got You Covered
We’re here to help you every step of the way. If you’re growing CBG for the first time or refining your method, check out our premium, lab-verified seed selection at CBGseedsource.com—and reach out anytime for expert support.
🌱 Grow smarter. Grow stronger. Grow with CBG Seed Source.
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