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Light Guide

Light Guide

Light Guide for Cannabis Growth

Light is a vital component in cannabis cultivation, affecting plant growth, flowering, and overall yield quality. Here's why and how to manage it during each growth stage:


Why light is important

Photosynthesis:
Light energy is converted into chemical energy, fueling plant growth and development.

Photoperiodism:
Light schedules regulate the transition from vegetative growth to flowering.

Chlorophyll Production:
Adequate light intensity promotes chlorophyll production, essential for photosynthesis.

Growth Regulation:
Light influences plant height and branching, impacting overall structure.

Cannabinoid and Terpene Production::
Proper lighting enhances the production of cannabinoids and terpenes, increasing potency and flavor.


Light Conditions per stage

During Germination

  • Light: Minimal; focus on warmth.
  • Lumens/PAR: Low lumens, minimal PAR.
  • Importance: Supports initial root development.

During Seedling Stage

  • Light: 16-18 hours per day, with blue spectrum emphasis.
  • Lumens/PAR: 3,000-5,000 lumens/100-200 PAR.
  • Importance: Encourages strong early growth.

During Vegetative Stage

  • Light: 18-24 hours per day, high intensity with blue spectrum.
  • Lumens/PAR: 15,000-50,000 lumens/400-600 PAR.
  • Importance: Promotes robust leaf and stem growth.

During Pre-flowering Stage

  • Light: Gradual reduction to 12 hours, full spectrum.
  • Lumens/PAR: 25,000-50,000 lumens/400-600 PAR.
  • Importance: Prepares for flowering by inducing hormonal changes.

During Flowering Stage

  • Light: 12 hours, high intensity with red spectrum.
  • Lumens/PAR: 25,000-50,000 lumens/600-900 PAR.
  • Importance: Supports bud development and enhances bloom.

During Drying and Curing Stage

  • Light: Minimal exposure.
  • Lumens/PAR: Minimal.
  • Importance: Prevents degradation, preserving potency and flavor.

By optimizing light conditions, growers ensure healthy growth, maximum yields, and high-quality cannabis.

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