The middle flowering phase, i.e. around weeks 7-8, is one of the most exciting and crucial phases in growing your cannabis plants. This is when you’ll see dense, resinous buds develop—the real reason you’ve been putting in all the work. It’s now a matter of giving them just the right care to achieve maximum potency and flavour. Here’s what to look out for during this phase.
The most important factors in the middle flowering phase
Light
Light is still one of the most important factors for your plants during this phase. The 12/12 light cycle (12 hours light, 12 hours darkness) remains crucial for your plants to flower. The 12/12 light cycle (12 hours light, 12 hours darkness) remains crucial for your plants to flower. To boost bud formation, be sure to utilise a high-quality red light spectrum. This not only promotes photosynthesis, but also resin production—key to potent and aromatic buds.
nutrients
In weeks 7-8, your plants need a special nutrient supply that specifically supports flower formation. Here you should reduce the nitrogen content and increase phosphorus and potassium instead. These nutrients help develop strong and potent flowers. A tip: Use special bloom boosters or additives that promote the formation of cannabinoids and terpenes. This can significantly improve the taste, aroma and potency of your flowers.
irrigation
During this phase, your plants often need more water because they are putting their last energies into developing the flowers. Be careful not to water too much – let the top layer of soil dry out a little between waterings to avoid root rot. The pH of the water is also important: it should be between 6.0 and 6.5 so that the plants can optimally absorb all nutrients.
Humidity and temperature
A stable climate is essential during the middle phase of flowering to avoid problems such as mould or bud rot (flower rot). Reduce humidity to around 40-50% to prevent the dense, resinous buds from becoming mouldy. The temperature should be between 20-26°C during the day, and it can get a little cooler at night. These slight temperature fluctuations also stimulate resin and terpene production.
Observe trichomes
From the middle flowering phase onwards, you should start observing the trichomes closely. Trichomes are the small resin glands that sit on the buds like a shiny layer. They give you clues about the ripeness of your plant. In the beginning, the trichomes are clear, then they become milky, and finally amber-coloured. Depending on the effect you prefer, you can determine the ideal harvest time: mil
Visual indicators for the mid-flowering phase
At this stage, you should clearly see that your plants are developing large, dense buds covered in a sticky layer of resin. The small hair-like structures (pistils) slowly change colour from white to orange or brown, indicating that the flowers are ripening. It’s worth checking on your plants daily to make sure they’re putting all their energy into developing potent flowers.
Conclusion
Weeks 7-8 are crucial to getting the best out of your cannabis plants. Stability in light, nutrients, temperature and humidity is now key to maximising resin and terpene production. Use this phase to optimally care for your plants and prepare for a successful final flowering phase. If you follow the recommendations in the Trinity of Modern Cultivation manual from Treez Tools, you will soon be holding an impressive harvest in your hands.
Good luck and happy growing!
Keywords: medium flowering phase cannabis, cannabis light cycle 12/12, cannabis nutrients flowering, trichome observation harvest, cannabis flower development weeks 7-8