—orig. developed through MOICANNA
– originally developed through MOICANNA
—orig. developed through MOICANNA
– originally developed through MOICANNA
The Blooming Phase is the pinnacle of cannabis cultivation, where plants dedicate all their energy to producing buds. This phase requires precise nutrient management, stable environmental conditions, and careful monitoring to maximise yield, resin production, and overall bud quality.
| Parameter | Ideal range |
| Water pH (Soil) | 6.0–6.5 |
| Water pH (Coco Coir) | 5.7–6.2 |
| Water pH (Hydroponics) | 5.5–6.0 |
| EC Soil (mS/cm) | 1.8–2.2 |
| EC Coco Coir (mS/cm) | 2.0–2.4 |
| EC Coco Hydroponics (mS/cm) | 2.2–2.6 |
| Day Temperature (°C/°F) | 24–26°C / 75–79°F |
| Night Temperature (°C/°F) | 18–22°C / 64–72°F |
| Root Zone Temperature (°C/°F) | 20–24°C / 68–75°F |
| Leaf Surface Temperature (°C/°F) | 24–26°C / 75–78°F |
| Related Humidity (RH%) | 40–50% |
| VPD (kPa) | 1.2–1.5 |
| Optimal CO₂ (ppm) | 1200-1500 |
| PAR (μmol/m²/s) | 900-1200 |
| Lights Hrs/Day | 12/12 (Photoperiod) or unchanged for Autoflowers |
| Light Intensity (%) | 90–100 |
| Light Distance (cm/in) | 20–40 cm / 8–16 in |
| Substrate Moisture | Moist but not waterlogged |
| Primary Nutrients | N, P, K (medium-high) |
| Secondary Nutrients | Ca, Mg, S (high) |
| Micronutrients | Fe, Zn, Mn, B, Cu, Mo |
| N-P-K | 1–4–4 |
| LST | ScrOG, Trellis, Light Bending |
| HST | None |
| Medium | Frequency | Volume (ml/L) | Runoff % |
| Soil | Every 2–3 days | 400–550 | 10–20% |
| Coco Coir | Daily | 450–600 | 20–25% |
| Hydroponics | Continuous | Maintain aeration | Ensure reservoir |
| Milestones | ⬜ | Fully developed buds covered in trichomes. |
| ⬜ | Milky trichomes with occasional amber hints (for early ripening). | |
| ⬜ | Plants structurally supported and free of pests or diseases. | |
| Checklist | ⬜ | Canopy evenly distributed with optimal light exposure. |
| ⬜ | Trichomes monitored for ripeness using a magnifier. | |
| ⬜ | Humidity and temperature maintained at ideal levels. | |
| ⬜ | Nutrients adjusted to focus on phosphorus and potassium. |
Foxtailing is a phenomenon where buds develop long, thin, and spire-like formations that resemble the tail of a fox. This growth pattern can occur for various reasons and may have positive or negative implications depending on the context.
The blooming phase is when plants focus all their energy on producing flowers or buds.
Use a 12/12 light schedule for photoperiod plants; autoflowers remain on their existing schedule.
Focus on nutrients high in phosphorus and potassium, while reducing nitrogen.
Keep temperatures between 24–26°C (75–79°F) and humidity between 40–50%.
Avoid high-stress training; you can use low-stress methods like light bending or ScrOG adjustments.
Use a magnifying tool to inspect trichomes and watch for pistil darkening as maturity progresses.
Ensure proper airflow, keep humidity below 50%, and inspect plants regularly for signs of mould.
Light defoliation is acceptable, but avoid removing too many leaves to prevent plant stress.
Use UV light supplementation and terpenoid boosters, and maintain proper nutrient and environmental conditions.
Use trellis nets, stakes, or string to prevent branches from breaking under the weight of heavy bu
Gradually reduce nitrogen and increase phosphorus and potassium, monitoring EC levels.
Yes, if using enhanced CO₂, maintain levels between 1200–1500 ppm to boost bud growth.
Inspect trichomes using a magnifying tool; look for a transition from clear to milky, with some amber appearing.
Yes, lower night temperatures slightly and keep humidity below 50% to preserve terpenes.
Ensure excellent airflow, keep humidity low, and inspect buds regularly for any signs of rot.
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Topics
flowering, buds, trichomes, nutrients, potassium, phosphorus
Focus Keyword
blooming phase | cannabis growth stage | flowering phase
Description
Buds form, aromas develop, demands increase. The blooming phase rewards precision and punishes neglect — a complete guide to getting it right.
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The VADEMECUM is not just a book anymore. It is becoming a living archive of guides, tools, notes and practical plant knowledge.
Free member access. Join early. Keep the archive open.
The VADEMECUM is becoming a living archive of practical plant knowledge.
Free member access.