Flowering Stage: Where Buds Begin to Bloom

The **flowering stage** is the most exciting and rewarding phase of cannabis cultivation. This is when your plant shifts its energy from leafy growth to producing resinous, aromatic buds. Timing, care, and environment all play a crucial role in determining the final yield, potency, and quality of your harvest.

In this guide, we’ll walk through what happens during the flowering stage, how to support your plants through it, and how high-quality genetics—like those from Original Sensible Seeds—can help you maximize your results.

When Does Flowering Start?

For photoperiod plants, flowering is triggered by a change in light schedule to 12 hours of light and 12 hours of darkness. Outdoors, this happens naturally as days shorten in late summer. For autoflowers, the flowering stage begins automatically after about 3–5 weeks from seed, regardless of light cycle.

What Happens During Flowering?

– The plant stretches significantly in the first 2–3 weeks (this is called the ‘flowering stretch’).
– White pistils (hairs) appear and begin forming into dense clusters of buds.
– Trichomes begin to form, producing cannabinoids and terpenes that give the plant its scent and potency.
– The plant gradually slows vertical growth and puts all energy into flower production.

Environmental Conditions for Flowering

– **Light**: Ensure 12 uninterrupted hours of darkness daily. Light leaks can confuse the plant and cause hermaphroditism.
– **Humidity**: Reduce to 40–50% RH to avoid mold and bud rot.
– **Temperature**: Aim for 20–26°C (68–78°F) during the day, and a small drop at night.
– **Airflow**: Strong circulation is crucial to prevent stagnant air and moisture buildup.

Nutrients and Plant Support

– **Switch to bloom nutrients**: These are lower in nitrogen and higher in phosphorus and potassium to support bud development.
– **Watch for deficiencies**: Yellowing leaves during flower may be normal or a sign of nutrient needs.
– **Support heavy branches**: As buds swell, use plant ties, bamboo stakes, or a trellis to prevent snapping.

Weeks of Flower: What to Expect

– **Weeks 1–3**: Flowering stretch and pistil development.
– **Weeks 4–6**: Buds stack up, trichomes become visible, strong aromas emerge.
– **Weeks 7–9+**: Buds fatten, pistils darken, and trichomes mature. Time to prepare for harvest.

Why Strain Selection Affects Flowering Results

Flowering is where the genetics you chose really shine. High-quality seeds produce more consistent flowers, balanced cannabinoid profiles, and predictable finishing times. Many growers prefer working with trusted breeders like Original Sensible Seeds for this reason—their strains are known for dense bud production, heavy resin content, and a range of desirable terpene profiles.

If you’re planning your next flowering-focused grow, take a look at the [best sellers](https://www.originalsensible.com/cannabis-seeds/best-sellers) from Original Sensible Seeds. These strains have earned their popularity by delivering top-tier results where it counts: in the final flower.

Final Thoughts

The flowering stage is where your hard work pays off. With the right light cycle, environmental care, nutrients, and high-performing genetics, you’ll be rewarded with potent, aromatic, and high-yielding buds. Take your time, monitor closely, and prepare for a harvest worth the wait.