Blue Dream
California's Most Beloved Sativa
Blue Dream is arguably the most popular cannabis strain in North America, and for good reason. This sativa-dominant hybrid — born from the legendary Blueberry and Haze genetics — delivers a fast-acting, balanced high that combines full-body relaxation with gentle cerebral invigoration. Its sweet berry and vanilla aroma fills the room, and its massive yields make it a favourite among commercial and home growers alike. Blue Dream is best suited for intermediate growers due to its tall, vigorous growth that requires some training and management.
21%
2%
9–10 weeks
Very High
120–180 cm
Intermediate
Creative, Uplifting, Cerebral
Sweet Berry, Vanilla, Citrus
How to Grow Blue Dream
Everything you need to know to grow Blue Dream successfully — from seed to harvest.
Pro Tips
- Top early (at node 4–5) to control height and create multiple main colas
- SCROG is highly recommended — Blue Dream loves to spread horizontally
- Sativa genetics mean it will stretch 2–3x during early flowering — plan for height
- Responds exceptionally well to CO2 supplementation in sealed grow rooms
- Terpene profile peaks when night temperatures drop 5–10°C below day temps in late flower
- Cure for minimum 4 weeks to fully develop the signature berry aroma
Indoor Growing
- Needs at least 1.5–2m of vertical space indoors due to sativa stretch
- Use a 1000W HPS or high-power LED for best results with this heavy yielder
- Expect 500–600g/m² indoors under optimal conditions
- Supercropping (gentle stem crushing) helps manage height and boosts yields
Outdoor Growing
- Thrives in warm, sunny climates — ideal for BC and Ontario summers
- Can reach 2–3 metres outdoors — stake and support early
- Harvest in mid to late October outdoors in Canada
- Outdoor yields can exceed 800g per plant in ideal conditions
Grow Timeline
Germination
2–5 days
Reliable germination. Soak 12 hrs then paper towel until taproot shows.
Seedling
1–2 weeks
Fast, vigorous seedling growth. Sativa traits visible in narrow leaf fingers.
Vegetative
6–8 weeks
Rapid, tall growth. Top and train aggressively during this phase.
Flowering
9–10 weeks
Significant stretch in weeks 1–3. Massive bud sites develop along long branches.
Harvest
Day 90–105
Harvest when trichomes are mostly milky. Amber trichomes add body relaxation.
Common Issues & Fixes
Excessive height / uncontrolled stretch
Top at week 3–4 of veg, use SCROG net, or supercrop during early flower stretch.
Boron deficiency (twisted new growth)
Add a small amount of borax to water (0.1g/gallon) or use a complete micronutrient supplement.
Bud mould on large colas
Defoliate around bud sites, improve airflow, keep humidity below 45% in late flower.
Long flowering time
Blue Dream naturally takes 9–10 weeks. Do not harvest early — final weeks add significant weight.
Set Up Your Grow with Mars Hydro
Get the LED grow lights, grow tents, and complete kits you need to grow Blue Dream indoors. Trusted by home growers across Canada.
Shop Mars Hydro CanadaBlue Dream Nutrient Guide
Week-by-week feeding recommendations to maximize yield and potency.
Week 1–2
SeedlingLight feeding. Blue Dream seedlings are vigorous — don't overfeed early.
Week 3–5
Early VegIncrease nitrogen for rapid vegetative growth. Add silica for stronger stems.
Week 6–8
Late VegFull veg feeding. Sativa genetics demand higher nitrogen during veg.
Week 9–10
Early FlowerTransition nutrients. Reduce N, boost P and K. Expect significant stretch.
Week 11–13
Mid FlowerPeak bloom feeding. Add terpene enhancers for berry aroma development.
Week 14–15
Late FlowerTaper nutrients. Buds swell significantly in final weeks.
Week 16–17
FlushFull flush with plain water. Critical for clean berry flavour expression.
Note: NPK values are relative percentages of maximum recommended dose, not absolute measurements. Always follow your specific nutrient brand's guidelines and adjust based on plant response.
Ready to Grow Blue Dream?
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