Blue Dream finishes indoors in 8 to 10 weeks after the light cycle changes to 12 hours on and 12 hours off. Some phenotypes need 11 weeks. Few plants are ready at week 8. Most indoor growers cut between day 63 and day 70.
Week by week indoors
- Week 1 to 2: Stretch starts. A 24-inch plant can reach 48 inches. Raise the light or bend stems down. Keep nutrients at grow strength.
- Week 3 to 4: Bud sites form at node points. Switch to bloom nutrients. Keep humidity at 45 to 50 percent.
- Week 5 to 7: Flower mass builds. Calyxes swell. A 600W HPS or an LED at 30 to 40 watts per square foot covers a 4x4 tent.
- Week 8 to 10: Pistils curl in and turn orange. Trichomes move from clear to cloudy to amber. This is the harvest window.
Harvest signals
Trichome color is the main cue. Cloudy heads mean peak THC. Amber heads mean more CBN and a heavier effect. Check calyxes, not sugar leaves, with a 30x to 60x loupe. Pistil color alone is not reliable.
blue dream thc level and terpenes
Flush with plain water for 7 to 14 days before the cut. Dry at 60 to 70 F and 55 to 60 percent humidity for 7 to 10 days.
blue dream vs haze strain comparison
Height and training
Blue Dream leans sativa. Indoor plants reach 3 to 5 feet without training. Top once at week 3 of veg. Use low-stress training or a screen of green net to keep an even canopy. Supercrop tall colas early, since stems harden after week 3 of flower.
blue dream strain genetics and lineage
Indoor yield
Yields run 3 to 6 ounces per plant in a 4x4 tent, or 400 to 500 grams per square meter in a dialed room. Blue Dream is a heavy feeder. Soil pH sits at 6.0 to 6.5; hydro sits at 5.8 to 6.2.
Common errors
- Cutting at week 8 because the label says 8 weeks. Most phenos need 9 or 10.
- Letting stretch fill the tent. Flip at 40 percent of final target height.
- Running night temps above 75 F in late flower. That slows terpene build.
- Keeping humidity above 60 percent past week 5. That risks bud rot on dense colas.
Environment notes: day temps 68 to 78 F, night temps 60 to 68 F, and 12 hours of unbroken dark. A light leak in the dark period can delay finish by a week or more.