Grow guides
Cannabis horticulture reference
The Lockbox horticulture pages cover the documented stages of indoor cannabis cultivation, from the day a seedling cracks through to a cured jar. Photoperiod and autoflowering lines are described as equally legitimate genetic groups — autoflowers finish on a fixed internal clock and stay short, photoperiod plants offer documented control over height and timing, and the published trade-offs come down to available space and patience rather than which group is more authentic. The voice across these pages is reference-oriented; numbers reflect what is documented in horticulture literature and in grower-published reports at hobby scale. Nothing here is medical, legal, or growing advice — readers are responsible for understanding the legal status of cannabis cultivation in their own jurisdiction before acting on any of it.
Written by
Lockbox Seeds Editorial
Editorial team
Reviewed
2026-05-23
Purpose
Educational reference. Not legal, medical, or growing advice.
Vegetative stage
What the vegetative stage is, the light schedules described in horticulture references, documented feeding ranges, low-stress training as a described technique, and the structural cues used to identify the end of the phase.
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Flowering stage
How the flowering response is triggered in photoperiod plants, what the stretch phase looks like, week-by-week bud development as described in published references, documented calcium-magnesium needs, and the late-flower flush debate.
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Harvest
Documented trichome staging against the strain's published flowering time, the morning-versus-evening chop debate, and how wet trim and dry trim are described in horticulture literature.
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Drying and curing
The 15 °C and 60% RH target described in published protocols, the eight-to-fourteen-day dry window, jar curing as documented, the burping cadence, and how failed jars are described in grower reports.
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Nutrients
Documented NPK ratios by stage, published calmag dosing ranges, EC targets in soil and coco, the mixing order described in horticulture references, the organic-versus-synthetic argument, and how the most-cited deficiencies appear.
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Lighting
LED versus HPS versus CMH compared, documented PPFD targets per stage, DLI math as published, hanging distances described in fixture documentation, light burn as a documented condition, and the photoperiod-versus-auto schedule split.
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Tent setup
Documented tent sizing for one to four plants, exhaust CFM math as published, carbon filter pairing, intake placement, humidity and VPD targets per stage, and what controllers automate that timers cannot.
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Common beginner mistakes
The most-cited beginner errors in published grower reports — overwatering, overfeeding, pH neglect, calendar-based harvest decisions, the aggressive flush, light hung too close, and ignored VPD.
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By climate
Documented protocols for cannabis cultivation across the climate bands most growers operate in — Mediterranean, continental, tropical, cool-temperate, and indoor tent environments.
View all climate guides →Lockbox Seeds publishes reference material about cannabis horticulture for educational purposes. The legal status of cannabis cultivation varies by jurisdiction; readers are responsible for understanding the law where they live. Editorial standards