Blue Dream Flowering Time Indoors: Quick Answer
Blue Dream finishes indoors in 9 to 10 weeks after you flip the lights to 12/12. That is 63 to 70 days. Some phenotypes finish in 8 weeks. Others need 11. The plant tells you when it is done, not the calendar.
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Prerequisites
- A healthy Blue Dream clone or seed
- 12/12 light cycle for flowering
- Bloom nutrients and pH control
- A 30x to 60x loupe or microscope
- A grow log to track days
Week-by-Week Timeline
- Week 1 to 2: Stretch phase. Plants gain height. No bud sites yet. Keep light at 12/12 and maintain temperature.
- Week 3 to 4: First flowers appear. Pistils show at nodes. Switch to bloom nutrients if you have not already.
- Week 5 to 6: Buds swell. Resin starts to form. Keep humidity at 40 to 50 percent.
- Week 7 to 8: Calyxes plump up. Pistils begin to darken. Start checking trichomes every other day.
- Week 9 to 10: Harvest window opens. Most trichomes should be cloudy with a few amber. Check calyxes, not sugar leaves.
- Week 11: Only if needed. Wait for full cloudy trichomes and more amber if you want a heavier effect.
How to Check Trichomes for Harvest
- Pick a bud at the middle of the plant, not the top.
- Look at the calyxes, not the sugar leaves.
- Cloudy trichomes mean peak THC. Amber trichomes mean more body effects.
- Harvest when 70 to 90 percent are cloudy and 10 to 30 percent are amber.
What Changes the Flowering Time
Phenotype is the biggest factor. A sativa-leaning Blue Dream can run 11 weeks. An indica-leaning cut may finish in 8. Light intensity, temperature, and nutrient strength also shift the finish date by a few days. Stress from heat, drought, or pests can delay flowering.
Common Mistakes That Delay Harvest
- Harvesting too early based on breeder time alone
- Checking sugar leaves instead of calyxes
- Letting temperatures spike above 85°F
- Switching light schedules during flowering
- Overfeeding nitrogen in late flower