Light spectrum variations in cannabis cultivation

## Introduction

The light spectrum plays a crucial role in cannabis cultivation. Different spectrums affect the growth, health and yield of plants in different ways. In this guide, you will learn how to select and apply the optimal light spectrum for each growth phase of your plants.

### Basics of the light spectrum

The visible light spectrum ranges from around 380 nm (nanometers) to 750 nm. Within this range, different wavelengths have different effects on plants:

- **Blue light (400-500 nm):** Promotes vegetative development and ensures compact plant growth.

- Green light (500-600 nm):** Penetrates deeper into the leaf canopy and supports photosynthesis in lower plant layers.

- Red light (600-700 nm):** Important for flower formation and increasing yields.

- Infrared (700-800 nm):** Supports flower formation and can influence internode length.

### Spectra for growth phases

- Seedling phase:** A high blue component helps the plants to grow compactly and vigorously. An optimum spectrum would be around 6500K.

- Vegetative phase:** A combination of blue and red light, with a predominance of blue, continues to promote strong, healthy growth.

- Flowering phase:** A spectrum with a higher proportion of red (approx. 3000K) promotes flower formation and increases yields. UV light can increase resin production and potency in small amounts.

### Technology for spectrum control

Modern LED systems offer the option of dynamically adjusting the light spectrum. These systems use different LEDs to produce a broad spectrum that can be changed as required. This allows precise control of the wavelengths your plants need at each stage.

### Adaptation to plant requirements

It is important to regularly adjust the light spectrum to meet the changing needs of the plants. This means continuously monitoring and adjusting the light conditions to create optimal growing conditions.

- Measurement:** Use spectral meters to ensure your lamps are delivering the desired spectrum.

- Adjustment:** Adjust the spectrum to optimize the different growth phases of your plants.

## Conclusion

Adjusting the light spectrum to the specific needs of your plants can make the difference between an average and an outstanding yield. Take advantage of modern LED technology to give your plants optimum support in every growth phase.

## Pro Tips

- Use full-spectrum LEDs for flexibility.

- Blue light promotes compactness in the vegetation.

- Red light is crucial for the flowering phase.

- Infrared can lengthen internodes.

- Spectral measuring devices help with monitoring.