Cal-Mag in Flowering Stages for Dream OG (Blue Dream × OG Kush)
Cal-Mag in Flowering Stages for Dream OG (Blue Dream × OG Kush)
Calcium and Magnesium become critical during flowering even though the focus shifts to bloom nutrients. Calcium strengthens cell walls for dense, heavy buds, while Magnesium powers chlorophyll production and helps move energy into developing flowers. Dream OG’s vigorous bud production makes it a moderate-to-high consumer of both — deficiencies here lead to airy buds, reduced resin, and lower yields.
Caption: Healthy mid-flower Dream OG (left) vs. early Mg deficiency (right) — yellowing between veins on older leaves.
Why Cal-Mag Matters More in Flower
- Weeks 1–3 Flower: Rapid bud site development demands high Ca for structure.
- Weeks 4–6 Flower (Peak Bloom): Highest demand as buds fatten and resin glands form.
- Weeks 7–9 Flower: Maintain steady levels during ripening; taper only during final flush.
- Common Triggers in Dream OG: Coco coir, RO/distilled water, high EC (competing K+), or pH drift above 6.5 (soil) / 6.2 (coco).
Recommended Cal-Mag Schedule for Flowering
Use a quality supplement like Botanicare Cal-Mag Plus, General Hydroponics CaliMagic, or Advanced Nutrients Sensi Cal-Mag Xtra.
| Flower Week | Dosage (per gallon) | Frequency | Notes |
|---|---|---|---|
| 1–2 (Transition) | 1–1.5 tsp (5–7.5 ml) | Every watering | Bridge from veg; support new bud sites |
| 3–5 (Peak Bloom) | 1.5–2 tsp (7.5–10 ml) | Every watering or every other | Highest demand period — watch for deficiencies |
| 6–7 | 1–1.5 tsp | Every watering | Maintain as buds swell |
| 8–9 (Ripening) | 0.5–1 tsp or none | As needed | Reduce if flushing; foliar if quick fix needed |
| Final Flush (last 7–10 days) | None | Plain pH’d water | Clear excess salts for smooth flavor |
Starting Point: Always begin at ½–¾ strength and increase based on plant response and runoff EC/pH readings.
Caption: Mid-flower feeding — adding Cal-Mag to support dense bud development in Dream OG.
Application Tips
- Foliar Spray (quick rescue): ½ tsp/gallon + surfactant, spray undersides of leaves in early morning or lights-off. Great for fast correction of Mg yellowing.
- pH Adjustment: Cal-Mag is usually slightly acidic — still check and adjust final mix to proper range.
- Coco vs Soil: Coco users need Cal-Mag in every watering. Soil growers can top-dress with dolomite lime for slow release.
- Overdoing It: Excess Ca can lock out Mg or K (brown leaf tips). If you see burn, flush and reduce dose.
Monitoring & Prevention for Dream OG
- Check lower/older leaves weekly for yellowing between veins (Mg) or brown spots/crippling on new growth (Ca).
- Keep night temps above 60°F (15°C) — cold roots impair uptake.
- Maintain RH 40–50% in flower to avoid compounding issues with mold.
- Oregon Outdoor: Extra important during cool, damp fall nights — foliar sprays help when soil uptake slows.
Pro Tip: Log Cal-Mag use alongside your nutrient schedule and StrainTree data. Consistent supplementation usually prevents issues entirely in this hybrid.
With proper Cal-Mag management, Dream OG will produce dense, frosty, berry-kush buds loaded with trichomes. Healthy Ca/Mg levels directly support the heavy resin and structure this cross is known for.
